Apartment Vacancy reaching new heights

How is this effecting the buying and selling side here is an excerpt from the story on WSJ
From 2000 to 2003, around 30% of renters who moved out of apartments were becoming home buyers, while just 15% of move-outs left to buy homes during the first quarter of 2009, AvalonBay Communities Chief Executive Bryce Blair told investors at a real-estate conference last month
Read the full story here