Year Dollars 1992-01-01 139771 1997-01-01 2431108 2002-01-01 3494834 2003-01-01 5333621 2004-01-01 8134956 2005-01-01 8204443 2006-01-01 7692870 2007-01-01 12850454 2008-01-01 12866238 2009-01-01 12798266 2010-01-01 16486408 2011-01-01 17034385 2012-01-01 22513872 2013-01-01 24539784 2014-01-01 12380944 2015-01-01 15973866 2016-01-01 14808166