Year Dollars 1992-01-01 45318014 1997-01-01 41866363 2002-01-01 33739078 2003-01-01 45976474 2004-01-01 46780473 2005-01-01 52114490 2006-01-01 75086787 2007-01-01 104359811 2008-01-01 152272277 2009-01-01 153700340 2010-01-01 209073519 2011-01-01 151860817 2012-01-01 164119852 2013-01-01 152051904 2014-01-01 172023526 2015-01-01 192725769 2016-01-01 180127219