Year Dollars 1997-01-01 321248 2002-01-01 655364 2003-01-01 1451219 2004-01-01 423373 2006-01-01 372752 2009-01-01 69445467 2010-01-01 2767744 2011-01-01 10410472 2012-01-01 18474782 2013-01-01 17233159 2014-01-01 12932589 2015-01-01 9358757 2016-01-01 7688575