Year Dollars 2002-01-01 233679 2004-01-01 399467 2006-01-01 1643970 2007-01-01 2466749 2008-01-01 326912 2010-01-01 547197 2011-01-01 202144 2012-01-01 162081 2013-01-01 224636 2014-01-01 225028 2015-01-01 1869894 2016-01-01 542249