Interest only loan mania

Here's a list with the top 50 metro areas as a percentage of loans.But,here's an interesting fact:

BusinessWeek Online has also obtained new data from Fannie Mae and Freddie Mac that lend credence to the LoanPerformance numbers. They show that, in April, going by dollar volume, interest-only loans accounted for 35% of the adjustable-rate mortgages in securities sold by Fannie Mae and 39% of the adjustable-rate loans in securities sold by Freddie Mac. That represents a sharp increase for both giants, which buy mortgages from lenders and then repackage them as securities for sale to investors.

BusinessWeek