Year Dollars 1992-01-01 312515475 1997-01-01 463456273 2002-01-01 573696148 2003-01-01 507527512 2004-01-01 597019537 2005-01-01 793811293 2006-01-01 846443586 2007-01-01 780440576 2008-01-01 1028284050 2009-01-01 969763684 2010-01-01 1306786686 2011-01-01 1601819250 2012-01-01 1774731041 2013-01-01 1829890113 2014-01-01 1690366913 2015-01-01 1848885075 2016-01-01 1689817069