Year Dollars 1992-01-01 16346566 1997-01-01 71072857 2002-01-01 71031502 2003-01-01 83982738 2004-01-01 105087251 2005-01-01 154453946 2006-01-01 124666528 2007-01-01 142784895 2008-01-01 161141473 2009-01-01 139364004 2010-01-01 170566677 2011-01-01 182836610 2012-01-01 205539973 2013-01-01 236772786 2014-01-01 237848051 2015-01-01 288916539 2016-01-01 262563895