Year Dollars 1997-01-01 787499 2002-01-01 2176121 2003-01-01 2939935 2004-01-01 2820782 2005-01-01 2092794 2006-01-01 3322008 2007-01-01 5899168 2008-01-01 4890366 2009-01-01 3559414 2010-01-01 7003074 2011-01-01 7036688 2012-01-01 9804973 2013-01-01 10251587 2014-01-01 37237967 2015-01-01 30208626 2016-01-01 31596933