Year Dollars 1992-01-01 9446331 1997-01-01 20872533 2002-01-01 5659201 2003-01-01 9590746 2004-01-01 21793166 2005-01-01 11751177 2006-01-01 10552170 2007-01-01 35503675 2008-01-01 43675115 2009-01-01 19814032 2010-01-01 21224386 2011-01-01 28488603 2012-01-01 62519346 2013-01-01 29536896 2014-01-01 30445275 2015-01-01 27043639 2016-01-01 26708847