Year Dollars 1992-01-01 10071510 1997-01-01 19753951 2002-01-01 15346497 2003-01-01 17653225 2004-01-01 19449882 2005-01-01 32908585 2006-01-01 42984282 2007-01-01 46803630 2008-01-01 32907957 2009-01-01 44283078 2010-01-01 46768729 2011-01-01 43223604 2012-01-01 52012491 2013-01-01 55510610 2014-01-01 57519718 2015-01-01 60074773 2016-01-01 46872109