Overall, the number and percentage of mortgages in default or foreclosure rose sharply from the second quarter of 2005 through the second quarter of 2007 to levels at or near historical highs, but there was significant variation among market segments, loan types, and states. The overall default rate grew by 29 percent, reaching a point at which just over 1 in every 100 mortgages was in default, almost a 28-year high. The foreclosure start rate did reach a 28-year high, rising by 55 percent. The subprime market experienced substantially steeper increases in default and foreclosure start rates than the prime or government-insured markets, accounting for two-thirds or more of the overall increase in the number of loans in default or foreclosure during this time frame.