Year Dollars 1992-01-01 2249133 1997-01-01 8808660 2002-01-01 10591700 2003-01-01 13345539 2004-01-01 20299642 2005-01-01 21820326 2006-01-01 28693622 2007-01-01 30930609 2008-01-01 32790044 2009-01-01 19365182 2010-01-01 33923347 2011-01-01 49221499 2012-01-01 67026259 2013-01-01 41743415 2014-01-01 34043200 2015-01-01 44199875 2016-01-01 41677397