Year Dollars 1997-01-01 674010 2002-01-01 1488764 2003-01-01 1747206 2004-01-01 2066332 2005-01-01 5302452 2006-01-01 15121943 2007-01-01 11892781 2008-01-01 12687419 2009-01-01 2656694 2010-01-01 2106791 2011-01-01 3028929 2012-01-01 2828740 2013-01-01 2139564 2014-01-01 1664010 2015-01-01 1876663 2016-01-01 4400674