Year Dollars 1992-01-01 33026273 1997-01-01 19672414 2002-01-01 15785746 2003-01-01 21328352 2004-01-01 28166434 2005-01-01 23201683 2006-01-01 23607492 2007-01-01 40792465 2008-01-01 39280776 2009-01-01 32999772 2010-01-01 34234038 2011-01-01 29090344 2012-01-01 19635202 2013-01-01 29148373 2014-01-01 26129112 2015-01-01 33263130 2016-01-01 16732826