Year Dollars 1992-01-01 6408365 1997-01-01 7541627 2002-01-01 22444711 2003-01-01 23354397 2004-01-01 19580695 2005-01-01 22005928 2006-01-01 22943476 2007-01-01 35922151 2008-01-01 48682673 2009-01-01 58609984 2010-01-01 46966210 2011-01-01 56510733 2012-01-01 48705046 2013-01-01 84954675 2014-01-01 188324681 2015-01-01 260499301 2016-01-01 112209402