Thank you, Thomas. Let’s turn to slide 10 and review our segment results. In our Olefins and Polyolefins Americas segment, fourth quarter EBITDA was $631 million, a $73 million decrease versus the third quarter. For the full year, segment EBITDA was approximately $2.8 billion. Relative to the third quarter 2018, Olefins results improved by approximately $70 million due to higher ethylene prices and the declining Gulf Coast ethane costs. Our cracker operating rates averaged 93% during the fourth quarter, exceeding the average industry performance of 87%. Approximately 80% of our ethylene production was from ethane and 94% came from NGLs. Polyolefin results were approximately $115 million lower than the prior period primarily due to a $0.04 per pound decline in polyethylene spread over ethylene. For the full year, results decreased by $137 million, Olefin results declined by approximately $445 million primarily due to a $0.06 per pound reduction in ethylene price. Spread improvements in polyethylene and polypropylene of $0.07 per pound and $0.03 per pound, respectively, drove an approximately $360 million improvement in polyolefins to mostly offset the declines in Olefins. IHS is currently forecasting relatively stable polyethylene chain margins for the first quarter. We are optimistic that 2019 will offer our earnings growth for the segment has the pace of polyethylene capacity additions slows, while global demand growth remained steady. Please turn to slide 11 as we review the performance of our Olefins and Polyolefins Europe, Asia and International segments. During the fourth quarter, EBITDA was $127 million or $135 million lower than the third quarter. For the full year, EBITDA was $1.2 billion. We continue to optimize our portfolio in the fourth quarter by divesting a carbon black subsidiary in France. This benefited the quarter by $36 million. Compared to the third quarter, Olefins results decreased by approximately $75 million primarily driven by a decline in volume, combined Polyolefin results decreased approximately $35 million driven by decreased margins, equity income decreased by $43 million primarily due to planned maintenance at our Polish, Korean and Saudi joint ventures. Full year EBITDA results were $764 million lower than 2017. 2017 benefited from a gain of $108 million on the sale of our interest in Geosel, 2018 results included the benefit from the sale of our carbon black subsidiary and a favorable impact of approximately $95 million due to an increase in the euro versus the U.S. dollar exchange rate relative to 2017. Olefin results for the full year decreased approximately $370 million compared to 2017. Increased feedstock costs during most of the year resulted in margin declines, while planned and unplanned maintenance and low Rhine River levels resulted in a volume decrease of approximately 10%. Combined Polyolefins results decreased approximately $345 million due to $0.03 per pound and $0.02 per pound lower spreads in polyethylene and polypropylene, respectively. Joint venture equity income decreased by $46 million primarily due to lower Polyolefins spreads. In January, demand is improving, following the typical seasonal declines and destocking of the fourth quarter. On slide 12, let’s take a look at our Intermediates and Derivatives segment. Fourth quarter EBITDA was $379 million, a decline of $125 million from the prior quarter. For the full year, the segment generated over $2 billion setting an annual record and improving over the prior year by $521 million. Fourth quarter PO and Derivatives results decreased by approximately $10 million when compared with the prior period, primarily due to lower volumes, partially offset by higher margins, Intermediate Chemicals decreased $65 million primarily due to reduced styrene and acetyls margins, Oxyfuels and Related Products results decreased approximately $40 million driven by margin declines due to higher ethanol pricing relative to crude oil and a volume decline due to planned maintenance. During 2018, the $521 million improvement in EBITDA was largely driven by margin improvements across all products due to tight market conditions and improved contracting strategies. We are very proud of the team’s accomplishments in 2018 and we expect continued benefits from this work in future years. While IHS is forecasting some moderation in methanol pricing for the first quarter, we should see improved PO and Derivatives volumes for the segment due to the completion of the planned maintenance at our Bayport, Texas facility during the fourth quarter. Slide 13 charts the full year results from I&D business improvements we discussed during our second quarter earnings call. You might recall that while the majority of the increased profitability was attributable to tight market conditions and reduced maintenance downtime at our facilities, we also described LyondellBasell’s improved contracting strategies and reliability as sources of durable improvements that should persist beyond 2018. Historically, our Intermediates and Derivatives segment generated relatively consistent EBITDA that averaged approximately $1.5 billion per year. We believe our new midpoint in typical markets will be approximately $1.7 billion, while the strong markets seen in 2018 may moderate, we do not believe these improved margins will fully revert in 2019. In addition, we have not stopped pursuing self-help within this business. This year we expect I&D contracting improvements to provide an additional $100 million of annual EBITDA for the segment starting in mid 2019. On slide 14, let’s review the results of our Advanced Polymer Solutions segment. Fourth quarter EBITDA was $86 million, a $16 million improvement over the prior period. For the full year, EBITDA was $400 million. Fourth quarter transaction and integration costs were $20 million. Compounding and Solutions results improved approximately $15 million over the third quarter, as we realized the full quarter of contribution from the addition of A. Schulman product lines. This was partially offset by volume and margin declines in polypropylene compounds. Advanced Polymers results decreased approximately $15 million due to lower margins and volumes. Full year EBITDA results for the segment were $38 million lower than 2017. Transaction and integration costs related to the acquisition impacted the segment by a $69 million in 2018. Compounding and Solutions results improved approximately $15 million, with higher volumes from new product lines, partially offset by lower volume and margin in polypropylene compounds. Advanced Polymers results increased approximately $15 million due to higher volumes. Integration activities are well underway and we have captured $47 million in forward annualized run rate synergies as of December 31st. We expect to see continued improvement in this segment, as we begin 2019 with a return of higher seasonal volumes and our continued focus on capturing value from the integration activities. Turning to slide 15, let’s discuss the performance of our Refining segment. Fourth quarter EBITDA was negative $84 million, $168 million decline from the third quarter. For the full year, EBITDA was $167 million or a $10 million improvement over 2017. Planned maintenance on one of our two crude and coker trains was completed in November. As a result, the average crude throughput was 184,000 barrels per day or 48,000 barrels per day less than the third quarter. With this work behind us, the Refinery is prepared to run full rates for the next two years and benefit from expected market opportunities. In the fourth quarter, the Maya 2-1-1 crack spread declined significantly, averaging less than an $11 per barrel for the first quarter and only $9.57 during November. Over the previous 12 years, the Maya 2-1-1 has been below $10 for only one month in December of 2011. The average over this time period is more than $22 per barrel. Spreads are improving as Pemex adjusts a monthly K factor of the Maya crude oil price formula to ensure that Mexican crude remains competitively priced for the U.S. Gulf Coast refining market. For the full year, Refining margins increased when compared with 2017 due to discounted Canadian crude pricing and improved fluid catalytic cracker conversion rates. Crude throughput was 231,000 barrels per day in 2018, slightly lower than 2017. Absent our recent planned maintenance, throughput would have averaged 256,000 barrels per day for the full year. I’d like to congratulate our refinery team for their diligent work and dedication to improve our Refinery reliability. With our planned maintenance completed, we look forward to stronger contributions from our Refinery in 2019 as we continue to benefit from improved reliability and an increase to Maya 2-1-1 crack spread. I would not like to turn to slide 16 and speak with you about a topic of growing global concern, the management of plastic waste. I think most of you are well aware of how billions of people benefit from advances in plastic. In fact, our products are well aligned with the United Nations’ sustainable development goals such as a reducing hunger and food spoilage by durable packaging. Delivering safe drinking water with plastic pipes and reducing energy consumption with innovative materials. However, we now face the growing problem of what to do with the plastic once it has served its initial purpose. The concern over plastic waste management is leading governments and consumers to consider bans on plastic straws and bags. But these products make up only a small fraction of the plastic waste that ends up in our oceans. Some suggests that we should replace all plastics with alternative materials, but most alternatives bring higher overall environmental and economic costs. On slide 17, I am very proud to highlight an alliance formed by LyondellBasell along with more than 25 of our industry peers and other participants across the value chain that make, use, sell, process, collect and recycle plastics. Together, we have committed over $1 billion with the goal of investing $1.5 billion over the next five years in collaborative partnerships to advance meaningful solutions that eliminate plastic waste in our environment. The alliance’s approach is based on four pillars, infrastructure that stops plastic waste from entering the environment, innovation in materials, technologies and business models that increased the value of plastic waste, engagement with partners and government, business and consumers to enable solutions, and meaningful projects to cleanup plastic waste that has already escaped into our environment, new infrastructure to prevent and cleanup plastic waste is especially important in emerging economies where collection practices often lag the developed world. Once plastic is collected and appropriately sorted, the waste can become a valuable feedstock for technologies that create versatile new materials from these post-used plastics. LyondellBasell’s QCP recycling joint venture with Suez is an example of an innovative business model that embraces this vision for a circular plastics economy. Education and engagement with governments, businesses and communities is critical to the success of these initiatives. The collaborative work of our alliance will be more powerful and efficient than fragmented efforts by each member of company working alone. Our surveys show that 10 rivers transport more than 90% of the river based plastics to the ocean and more than 50% of land based plastic waste leakage comes from only five countries. There will be a focus on developing solutions that stop this leakage at their sources and cleanup areas with the existing plastic waste by recognizing the value of reusing plastic. While we certainly have an immense challenge ahead of us, I am confident that our alliance will find meaningful solutions to help end plastic waste and create a sustainable future for our industry and our planet. Now let’s turn to slide 18 and discuss the outlook for 2019. Ethylene feedstocks were volatile during the second half of 2018 with U.S. Gulf Coast ethane prices spiking up in September and then reverting in November. As we discussed during our third quarter earnings call, LyondellBasell has the optionality across our U.S. assets with ethylene production from both low cost Midwest ethane and feedstock flexibility at our Gulf Coast crackers. NGL prices are likely to show some volatility during 2019 with increased demand from the remaining new ethylene crackers likely to arrive ahead of planned NGL pipeline and fractionation capacity additions. We expect that this pattern of prolong startups for ethylene crackers along with NGL supply additions will smooth the path forward towards forecast for a return to plentiful feedstock availability within the next year. We are encouraged by a forecast for polyethylene demand growth to continue with long-term historical ranges of 4% to 5%. Over the past three years, capacity additions have surpassed demand and moderated operating rates, with less global capacity scheduled to start-up during 2019 and 2020, we believe that LyondellBasell’s new Hyperzone HDPE capacity will find favorable markets as we ramp-up during the second half of this year. Turning to slide 19, let me summarize the year’s highlights. In 2018, our strong earnings were supported by record annual EBITDA in our Intermediates and Derivatives and Technology segments. We will continue to benefit from some of the improvements from both segments through contracting changes in I&D and licensing growth in Technology. Our company generated approximately $5.5 billion of cash from operating activities. This strong cash generation contributed to growth through profit generating capital investments and the acquisition of A. Schulman. Furthermore, we continue to provide significant shareholder returns through a growing top-quartile dividend and $1.9 billion in share repurchases. By completing the acquisition of A. Schulman, we have created the world’s largest plastics compounding business and we are well underway with integration activities that are capturing significant synergies in our new Advanced Polymer Solutions segment. Our strong cash flows and healthy balance sheet leave us well-positioned to take advantage of additional value creating inorganic opportunities. In 2018, we advance on the construction of our Hyperzone polyethylene plant and we look forward to the added profitability will contribute to our O&P Americas segment, following the startup in the third quarter. Last August, we also began construction of PO/TBA plant that will start up in 2021 providing further earnings growth for our I&D segment. We move forward on sustainable solutions for our company by forming quality circular polymers, our premium plastics recycling joint venture with Suez. And in collaboration with our industry leaders we formed the alliance to end plastic waste to generate sustainable global solutions for plastic waste that will benefit our industry and the environment. Going into 2019, we look forward to increase production and availability of shale-based feedstocks and a moderation in the pace of capacity additions that should provide a favorable environment for our new HDPE capacity and that allow us to maximize value from our diverse global business portfolio. With that said, we are now pleased to take your questions.