The apartment vacancy rate declined to 5.2% in fourth quarter 2011 from 6.6% in 2010, and down from 5.6% in the third quarter, according to Reis. The vacancy rate went up to 8.5% in 2009. Data from Reis shows rents went up in 71 of 82 markets it tracks. For the U.S. rents went up by an average 0.4% in the 4th quarter, to $1064 a month, increasing from $1026 in 2009. Rent growth for 2011 was 2%. Factors helping demand for apartment rentals are the reluctance of buyers to invest in a home when prices are declining in an uncertain economy, and fears of another downturn. Factors holding price increases down in New York are the declining jobs inthe financial services industry and the already high levels of rental prices- reaching $2876 a month. Demand in San Francisco and San Jose was higher and prices were up over 5% in 2011, with better properties raising rents by 10%.