Yeah, Rick, it's a good question. And what I would say is, the reason that borrowers don't pursue a refinancing for those who have, I'll call it, who are right who stand to benefit meaningfully in terms of the monthly payment reduction, isn't just because of adverse selection. And more often than not it's just because of every market has inefficiencies across the entire spectrum of markets that we might look at, and the same exists for the housing market and for the mortgage market. And so we're not seeing a call it, a meaningful shift in risk on the in-force portfolio. Instead, what we're observing is exactly the opposite. And for a few reasons, the overall quality of our portfolio continues to improve. One, there's meaningful equitisation of that, those early advantages that are that's coming through, right with the record pace of house price appreciation, where borrowers are building equity in a meaningful way every month, every quarter, that goes by, and that has the effect of moving us further away from risk in a positive way. And for what it's worth, it has the effect of also providing real value for those borrowers right. And moving them away further away from adverse outcomes related to their homeownership. And so for the older vintage business that hasn't refinanced. We're seeing improvement every quarter that goes by, given that HPA, right? And that comes through to a degree as around our expectations for ultimate, ultimate lifetime loss continue to improve on those vintages, notwithstanding, maybe on the margin if you have some adverse dynamics that that come through. And then with the record levels of new business production that we've been putting on, the other dynamic that we're seeing and said our portfolio was getting younger, in a positive way. So typical peak loss in current period for a mortgage is between year three and year six, which is historically that's when borrowers to get in trouble are going to get into trouble in the most pronounced way, for a variety of reasons. And as we brought so much new business volume on that itself is such high and strong underlying credit characteristics. It has the effect of drag dragging the overall credit profile portfolio higher, but also dragging the age of the portfolio younger-and-younger, which moves us further away from that period of peak loss currents that we would expect when we model things out. So it's actually been quite a positive for us, both, what's happening with HPA and the equitisation of risk for those borrowers that remain robbing refinance, and then all of the positives that come from the record level of production that we've had most recently.