Well, Rick, the interesting thing about our business is, it's probably not mature yet. And I think, one of the reasons after the financial crisis, everybody jumped into this business, especially the banks in a big way, is because this is a business that just continues to grow. When you look at the consumer business in the United States, it's sort 8%, 8%, 8%, 8%, and you see that -- you'll see that continuing. And I think when we look at our business and from maturity perspective, look, it's a mix of new customers, it's a mix of -- or what we would call same store sales, if you’re thinking about this from a retail perspective, it's a mix of organic spending as well. But, we're bringing in new customers to the franchise. And our brand is playing a lot more with millennials, which is over half of our customers that we're acquiring at this particular point in time. And the reach that we're getting with some of our co-brand partners is getting us new customers as well. So, I don't really look at this business as really mature. I look at this business as having a lot -- and I'm not just talking about our business. I'm talking about the card business in general. I think about this as a business that still has a lot of legs and a lot of growth. And you see a lot of the technological changes, whether it's sort of tap and go and making it easy to buy online and so forth. I mean, just with contact list, you're going to see more and more smaller dollar transactions coming on to card products, whether that be vending machines transactions, which is the next thing that's going to happen; you're seeing this with transit; obviously, now in New York City, you can use tap and go through the New York City transit system. So, we don't really look at this as a mature business at all. And we think there is expansion opportunities for us not only with new customers but also with our existing customers, as we have less than half their share of wallet and we have, as we said for a long time, we only have about 23% of their share of lending. So, we think there's still a lot of upside in this business.