Year Dollars 1997-01-01 1877663 2002-01-01 1895947 2003-01-01 2345699 2004-01-01 3949769 2005-01-01 4890637 2006-01-01 7207805 2007-01-01 4175902 2008-01-01 4155901 2009-01-01 2859711 2010-01-01 4540843 2011-01-01 7510133 2012-01-01 3449222 2013-01-01 3741508 2014-01-01 2172290 2015-01-01 2245707 2016-01-01 2137905