Year Dollars 1992-01-01 2001964 1997-01-01 6162541 2002-01-01 5658842 2003-01-01 6078597 2004-01-01 7515882 2005-01-01 9853517 2006-01-01 11743633 2007-01-01 8996683 2008-01-01 11867514 2009-01-01 14069102 2010-01-01 16900589 2011-01-01 14748133 2012-01-01 13863822 2013-01-01 22090307 2014-01-01 17339512 2015-01-01 18396394 2016-01-01 16382135