Year Dollars 1992-01-01 368597 1997-01-01 451473 2002-01-01 3878261 2003-01-01 4862896 2004-01-01 3559777 2005-01-01 11968757 2006-01-01 4187826 2007-01-01 2812078 2008-01-01 4745170 2009-01-01 5466963 2010-01-01 10443047 2011-01-01 12331903 2012-01-01 4198536 2013-01-01 9875940 2014-01-01 26741427 2015-01-01 9788483