Mortgage rates increased slightly during the last full week of 2013.

The 30-year fixed-rate mortgage averaged 4.48 percent for the week ending Dec. 26, up from the previous week’s 4.47 percent, according to Freddie Mac’s Primary Mortgage Market Survey. A year ago at this time, the 30-year rate averaged 3.35 percent.

The 15-year fixed-rate mortgage averaged 3.52 percent, up from last week when it averaged 3.51 percent. A year ago at this time, the 15-year rate averaged 2.65 percent.

"Mortgage rates were little changed this week following mixed economic reports," Frank Nothaft, vice president and chief economist at Freddie Mac, said in a statement. "Real GDP was revised upwards to 4.1 percent growth in the third quarter of this year. However, existing-home sales dropped 4.3 percent to a seasonally adjusted annual rate of 4,900,000 in November. Also, new home sales fell 2.1 percent to a seasonally adjusted annual rate of 464,000."