Year Dollars 1992-01-01 16911309 1997-01-01 1599262 2002-01-01 3818953 2008-01-01 104252653 2009-01-01 108940199 2010-01-01 167302035 2011-01-01 148572641 2012-01-01 110838839 2013-01-01 176697433 2014-01-01 91903543 2015-01-01 16655931 2016-01-01 6479393