Year Dollars 2002-01-01 270645 2003-01-01 150297 2004-01-01 651822 2005-01-01 203464 2006-01-01 822619 2007-01-01 1608005 2008-01-01 1675843 2009-01-01 3543614 2010-01-01 274040 2011-01-01 252481 2012-01-01 190189 2014-01-01 308794 2015-01-01 682187