Year Dollars 1992-01-01 5284929 1997-01-01 19178758 2002-01-01 30843509 2003-01-01 24418976 2004-01-01 26617901 2005-01-01 33351399 2006-01-01 22237046 2007-01-01 35034369 2008-01-01 33687729 2009-01-01 16383244 2010-01-01 24911475 2011-01-01 19325685 2012-01-01 29236696 2013-01-01 49652442 2014-01-01 105208237 2015-01-01 147656963 2016-01-01 76675519