Year Dollars 1992-01-01 2479842 2002-01-01 13464351 2003-01-01 15582446 2005-01-01 15748103 2006-01-01 15344098 2007-01-01 21210393 2008-01-01 37214860 2009-01-01 25587726 2012-01-01 30337660