Year Dollars 2003-01-01 54364 2005-01-01 175130 2006-01-01 251777 2007-01-01 155286 2008-01-01 441868 2009-01-01 1356448 2010-01-01 1427552 2011-01-01 3749438 2012-01-01 4159903 2013-01-01 3682927 2014-01-01 1164764 2015-01-01 550372 2016-01-01 451569