Mortgage rates for the past 52 weeks, at a glance (AP)

The average rate on the 15-year fixed mortgage fell this week to 3.54 percent, the lowest in at least two decades, Freddie Mac said Tuesday. The average rate on the 30-year fixed mortgage fell to 4.39 percent, the lowest level of the year.Here's a look at rates for fixed and adjustable mortgages for the past 52 weeks:Current week's average Last week's average 52-week high 52-week low30-year fixed 4.39 4.55 5.05 4.1715-year fixed 3.54 3.66 4.29 3.545-year adjustable 3.18 3.25 3.92 3.181-year adjustable 3.02 2.95 3.53 2.95

Browse your computer here