Year Dollars 1992-01-01 195396 1997-01-01 308253 2002-01-01 385462 2003-01-01 372049 2004-01-01 698138 2005-01-01 920468 2006-01-01 1422257 2007-01-01 3575840 2008-01-01 3615366 2009-01-01 3977507 2010-01-01 1728169 2011-01-01 2508809