Year Dollars 1992-01-01 278083 1997-01-01 4245620 2002-01-01 7545695 2003-01-01 11390553 2004-01-01 11228552 2005-01-01 2163783 2006-01-01 9700773 2007-01-01 12226651 2008-01-01 12335410 2009-01-01 16225498 2010-01-01 27451933 2011-01-01 8200893 2012-01-01 18134430 2013-01-01 12663038 2014-01-01 5929550 2015-01-01 9938009 2016-01-01 12097638