Year Dollars 1992-01-01 52080713 1997-01-01 133208807 2002-01-01 156003321 2003-01-01 215827920 2004-01-01 162732142 2005-01-01 145959000 2006-01-01 158007020 2007-01-01 114609048 2008-01-01 105134339 2009-01-01 123992914 2010-01-01 221730117 2011-01-01 272111703 2012-01-01 253832444 2013-01-01 282937756 2014-01-01 249990263 2015-01-01 207654961 2016-01-01 170688434