Year Dollars 1992-01-01 5040536 1997-01-01 4767883 2002-01-01 5376086 2003-01-01 4970081 2004-01-01 9959291 2005-01-01 18019507 2006-01-01 18043511 2007-01-01 23974267 2008-01-01 16810489 2009-01-01 13048262 2010-01-01 11897984 2011-01-01 11710368 2012-01-01 14414507 2013-01-01 14855247 2014-01-01 10443837 2015-01-01 13772347 2016-01-01 6138294