Year Dollars 1992-01-01 4068352 1997-01-01 10312250 2002-01-01 25836454 2003-01-01 29204446 2004-01-01 29041798 2005-01-01 25973543 2006-01-01 57828233 2007-01-01 27159342 2008-01-01 32304905 2009-01-01 36667539 2010-01-01 44357215 2011-01-01 27661156 2012-01-01 31144218 2013-01-01 32956810 2014-01-01 48210350 2015-01-01 33622050 2016-01-01 38623555