Sure. Sure, Luke. Thank you for the question. So, instrument growth in the quarter, again, finished with double-digit instrument growth. For the year, it's 16%. And it's really across the board, right? For the full-year, you see mass spec well into the [20s] [ph], TA in the high-teens, LC also in the double-digit range. And this is largely due to the success of our commercial initiatives, which were around instrument replacement and really focusing on our new product launches. And there you've seen a complete revitalization of the portfolio, especially on the mass spec side, where we've gained traction in biologics application with the Xevo G3 with the BioAccord more recently with the cyclic and [indiscernible] absolute for food and environmental applications [on the light] [ph]. On the LC side, same thing with Arc HPLC and ACQUITY Premier. So, you see very strong new products coming through, which are gaining traction. Now, as we look ahead, I mean, orders are as strong as ever. We see a very, very healthy backlog going into the year. And as we look forward, the end markets are still very robust, right. So, we don't expect – and across the board, they are pretty robust, in industrial pharma itself, as well as academic with additional funding, but as we look ahead, I would caution against using the 16% and extrapolating. I think we've been saying this for a while, these are incredible growth numbers. On a stacked basis, you're looking at double-digit growth for instruments, but we cannot expect the instrument growth to continue at a double-digit level. I mean the long-term average is around 3% to 4%. And if I were to just dig into the guide a little bit, when we say 5% to 6.5%, so the 5% – if you just take the higher-end and then make it consistent, let's say, with the recurring revenues and the lower-end consistent with the instrument growth in the future, long-term averages for instrument growth are between 3% and 4%. Add 100 basis points of additional commercial execution and another 100 basis points for pricing, and there you have the 5%-ish instrument growth. So, we think it – long term, we should be seeing healthy instrument growth. And I've heard several comments which say, ‘hey, you've seen serious significant instrument growth, will it come crashing down?’ Not at all. We don't see any signs of that. We do see it reverting back to, sort of long-term growth averages, and we think we will out-execute the overall market growth with our commercial initiatives, with our new products and with additional pricing.