Year Dollars 1992-01-01 24465085 1997-01-01 41565053 2002-01-01 30434281 2003-01-01 35723113 2004-01-01 45127076 2005-01-01 53768294 2006-01-01 52237248 2007-01-01 55712925 2008-01-01 60175886 2009-01-01 48354273 2010-01-01 52431554 2011-01-01 59850159 2012-01-01 64882649 2013-01-01 69255964 2014-01-01 67826303 2015-01-01 60149183 2016-01-01 64235378