Year Dollars 1992-01-01 25712547 1997-01-01 52277450 2002-01-01 51094179 2003-01-01 54435384 2004-01-01 54556931 2005-01-01 107661926 2006-01-01 130352579 2007-01-01 205010108 2008-01-01 251401591 2009-01-01 154745452 2010-01-01 140385708 2011-01-01 140310364 2012-01-01 156404157 2013-01-01 146311760 2014-01-01 144466115 2015-01-01 73388707 2016-01-01 75763065