RealFacts recently released its survey results of 2012 first quarter rental rate changes in 47 metro statistical areas. All but three of the metros managed to increase rental rates on a quarterly average basis. And all but two markets (Reno and Las Vegas) were able to show growth on a year-over-year basis. Some regions, like Silicon Valley and San Francisco, have seen rental growth explode since this time last year. And according to the company, it's a trend that shows no sign of slowing during the next several quarters. Here’s a look at the figures that RealFacts collected in its Q1 survey: