Year Dollars 1997-01-01 922125 2002-01-01 1046621 2003-01-01 685395 2004-01-01 860601 2005-01-01 1924337 2006-01-01 1833390 2007-01-01 2150381 2008-01-01 1127385 2009-01-01 2069085 2010-01-01 2289047 2011-01-01 2920880 2012-01-01 3084983 2013-01-01 2240232 2014-01-01 3003844 2015-01-01 1451364 2016-01-01 2553406