Year Dollars 1992-01-01 1127979 1997-01-01 7904237 2002-01-01 1579250 2003-01-01 3785649 2004-01-01 7268810 2005-01-01 7336800 2006-01-01 5372309 2007-01-01 7217581 2008-01-01 7055305 2009-01-01 15884108 2010-01-01 91865351 2011-01-01 31989454 2012-01-01 61823343 2013-01-01 37413488 2014-01-01 19907761 2015-01-01 19741843 2016-01-01 34026312