The movement out of rental accommodation into homeownership continued in 2004 and the average apartment vacancy rate for major urban centres rose from 2.2 to 2.7 per cent. (remonline.com)
From 2009 to 2011, the rental apartment vacancy rate fell from 3.5 % to 1.4 %. (ryancoyle.com)
This sounds like it's good for the economy, but both unemployment rates and apartment vacancy rates need to be carefully balanced. (effectivecoverage.com)