Year Dollars 1992-01-01 28573147 1997-01-01 50105613 2002-01-01 126169114 2003-01-01 170786829 2004-01-01 179822627 2005-01-01 131805755 2006-01-01 153470061 2007-01-01 117823478 2008-01-01 123873356 2009-01-01 96601129 2010-01-01 114473615 2011-01-01 128075554 2012-01-01 150285146 2013-01-01 113660727 2014-01-01 112633293 2015-01-01 78876462 2016-01-01 76459741