(AP) — U.S. long-term mortgage rates dropped this week to a record low for the 16th time in 2020, reflecting an economy hard hit by the coronavirus pandemic. Mortgage giant Freddie Mac said Thursday that the average rate on the benchmark 30-year fixed-rate home loan slipped to 2.66% from 2.67% last week. A year ago, it stood at 3.74%. The average rate on 15-year fixed-rate loans, popular among homeowners seeking to refinance their mortgages, dipped to 2.19% from 2.21%. A year ago, it was 3.19%. The 5-year adjustable rate mortgage was unchanged this week at 2.79%. A year ago, it was at 3.45%.