Year Dollars 1997-01-01 89525 2002-01-01 686433 2003-01-01 1120599 2004-01-01 2419523 2005-01-01 3573647 2006-01-01 3091828 2007-01-01 3032115 2008-01-01 5941857 2009-01-01 2571353 2010-01-01 2362529 2011-01-01 3913069 2012-01-01 2461433 2013-01-01 4046799 2014-01-01 4648556 2015-01-01 2690777 2016-01-01 2217316