Year Dollars 1992-01-01 2267947 1997-01-01 3747684 2002-01-01 3738569 2003-01-01 6353930 2004-01-01 8498994 2005-01-01 19074420 2006-01-01 16918137 2007-01-01 38216521 2008-01-01 32804569 2009-01-01 34499731 2010-01-01 51131901 2011-01-01 34322363 2012-01-01 26546460 2013-01-01 18891898 2014-01-01 22983355 2015-01-01 17275831 2016-01-01 14327630