Year Dollars 1992-01-01 10302810 1997-01-01 37833054 2002-01-01 38313480 2003-01-01 50910016 2004-01-01 40474104 2005-01-01 50250238 2006-01-01 64821129 2007-01-01 110067529 2008-01-01 259161968 2009-01-01 140231308 2010-01-01 136079656 2011-01-01 162461374 2012-01-01 188421627 2013-01-01 266024110 2014-01-01 208180967 2015-01-01 166881669 2016-01-01 118470719