Year Dollars 1992-01-01 10364369 1997-01-01 18681916 2002-01-01 13741296 2003-01-01 11406524 2004-01-01 12495943 2005-01-01 20952219 2006-01-01 18728812 2007-01-01 35634315 2008-01-01 52255090 2009-01-01 47719113 2010-01-01 81954666 2011-01-01 112768362 2012-01-01 112435382 2013-01-01 121662745 2014-01-01 130382770 2015-01-01 149047651 2016-01-01 189263457