Year Dollars 2002-01-01 311819 2003-01-01 386095 2004-01-01 589463 2005-01-01 698839 2006-01-01 1054952 2007-01-01 2852318 2008-01-01 5020318 2009-01-01 7315302 2010-01-01 11153265 2011-01-01 16693938 2012-01-01 12546982 2013-01-01 11496606 2014-01-01 14846085 2015-01-01 13115378 2016-01-01 13887798