Year Dollars 2002-01-01 416290 2005-01-01 2490642 2007-01-01 1278633 2008-01-01 1243728 2009-01-01 752730 2010-01-01 207052 2011-01-01 1568569 2012-01-01 1767353 2013-01-01 3476701 2014-01-01 3333578 2015-01-01 4407275 2016-01-01 3838588