Mortgage rates dropped significantly in the past week to their lowest level in nine months.

According to the latest Freddie Mac Primary Mortgage Market Survey, 30-year fixed rate mortgages ended the week of January 10 averaging 4.45 percent. That was down from 4.51 percent the week before. Last year at this time, 30-year rates were at 3.99 percent.

Also dropping were 15-year fixed rates, from an average of 3.99 percent to 3.89 percent. A year ago at this time, the 15-year fixed rate averaged 3.44 percent.

Five-year adjustable rate mortgages averaged 3.83 percent during the most recent survey. The week before, they averaged 3.98 percent. Last year’s 5-year ARM averaged 3.46 percent.

Freddie Mac Chief Economist Sam Khater said the decline in mortgage rates helped mortgage applications jump more than 20 percent.

“Lower mortgage rates combined with continued income growth and lower energy prices are all positive indicators for consumers that should lead to a firming of home sales,” Khater said.

At the end of the week, Bankrate.com listed the current 30-year fixed mortgage rate at 4.43 percent; 15-year fixed at 3.75 percent; 30-year jumbo rates at 4.40 percent; and a 5-year ARM at 3.99 percent.

Wells Fargo’s rates for the past week were 4.5 percent on a 30-year fixed and 4.125 on a 30-year jumbo; 3.875 percent on a 15-year fixed; 3.75 percent on a 15-year jumbo; and 4.25 percent on both 5-year and 7-year ARMs.

U.S. Bank listed its current 30-year fixed at 4.25 percent, 20-year at 4.125 percent, and 15-year at 3.625 percent. Its 5-year ARM is 3.625 percent and 10-year ARM is 4.125 percent.