Year Dollars 1997-01-01 1718437 2002-01-01 3718354 2003-01-01 2175663 2004-01-01 2727483 2005-01-01 3045139 2006-01-01 4671361 2007-01-01 5170791 2008-01-01 10726934 2009-01-01 4119908 2010-01-01 4550180 2011-01-01 6218370 2012-01-01 6334133 2013-01-01 10923490 2014-01-01 7222101 2015-01-01 7895492 2016-01-01 9108957