Year Dollars 1992-01-01 3239666 1997-01-01 4107019 2002-01-01 2478667 2003-01-01 3291582 2004-01-01 7837066 2005-01-01 4419640 2006-01-01 6555740 2007-01-01 10341001 2008-01-01 9980198 2009-01-01 8394670 2010-01-01 9172618 2011-01-01 11588626 2012-01-01 14952780 2013-01-01 11545407 2014-01-01 10595698 2015-01-01 46078734 2016-01-01 54692958