Year Dollars 1992-01-01 844594 1997-01-01 1632882 2002-01-01 772536 2003-01-01 19674587 2004-01-01 3695559 2005-01-01 2144947 2006-01-01 7521275 2007-01-01 6058619 2008-01-01 9275286 2009-01-01 13663208 2010-01-01 12412353 2011-01-01 13926699 2012-01-01 8400208 2013-01-01 10715584 2014-01-01 12496895 2015-01-01 20500596 2016-01-01 20262793