Year Dollars 1992-01-01 389558 1997-01-01 1372524 2002-01-01 3405044 2003-01-01 2320721 2004-01-01 1780045 2005-01-01 3258026 2006-01-01 4898771 2007-01-01 6195153 2008-01-01 5553422 2009-01-01 5711236 2010-01-01 10943174 2011-01-01 17151019 2012-01-01 12015757 2013-01-01 13249222 2014-01-01 17502877 2015-01-01 13769064 2016-01-01 17336656