Year Dollars 1997-01-01 3153812 2002-01-01 3684380 2003-01-01 4873667 2004-01-01 1978761 2005-01-01 524526 2006-01-01 6777232 2007-01-01 5681900 2008-01-01 5327806 2009-01-01 9359336 2010-01-01 2976417 2011-01-01 3302316 2012-01-01 4810710 2013-01-01 2198951 2014-01-01 4274410 2015-01-01 4210470 2016-01-01 3012774