Year Dollars 1997-01-01 946035 2002-01-01 2656105 2003-01-01 2459699 2004-01-01 3338970 2005-01-01 4336613 2006-01-01 9919635 2007-01-01 9044412 2008-01-01 7508117 2009-01-01 14763105 2010-01-01 9463015 2011-01-01 11664433 2012-01-01 17351726 2013-01-01 8853072 2014-01-01 10713536 2015-01-01 13832177 2016-01-01 14564958