Year Dollars 1992-01-01 731502 1997-01-01 1047292 2002-01-01 769018 2003-01-01 3247388 2004-01-01 6147547 2005-01-01 1717502 2006-01-01 1511220 2007-01-01 3520707 2008-01-01 3064528 2009-01-01 21739815 2010-01-01 2197900 2011-01-01 5165752 2012-01-01 6618608 2013-01-01 1927691 2014-01-01 2993756 2015-01-01 2807540 2016-01-01 3693842