Year Dollars 1992-01-01 2634999 1997-01-01 3240509 2002-01-01 2470404 2003-01-01 3326777 2004-01-01 4371806 2005-01-01 3180075 2006-01-01 3059203 2007-01-01 5934488 2008-01-01 12094602 2009-01-01 10704742 2010-01-01 17681942 2011-01-01 17912391 2012-01-01 19917714 2013-01-01 15497134 2014-01-01 16419802 2015-01-01 7858208 2016-01-01 9775602