In December 2008, improvements in home affordability and low mortgage rates contributed to a 7% year-over-year increase in home sales in the 25 metropolitan statistical areas (MSAs) tracked by Radar Logic Incorporated. According to the December 2008 RPXTM Monthly Housing Market Report, transactions increased in 14 of the 25 MSAs, with the largest increase in metropolitan areas where sales of foreclosed homes constitute a significant share of total transactions, particularly Las Vegas, Phoenix and the five California MSAs covered by the report.