Year Dollars 1992-01-01 4148155 1997-01-01 4756918 2002-01-01 1813455 2003-01-01 1198607 2004-01-01 918567 2005-01-01 2694366 2006-01-01 2195811 2007-01-01 1398412 2009-01-01 14759788 2010-01-01 2777916 2011-01-01 5108170