Year Dollars 1992-01-01 820896 1997-01-01 81378 2002-01-01 233214 2003-01-01 131807 2008-01-01 15307844 2010-01-01 16822756 2011-01-01 14351688 2013-01-01 620742 2014-01-01 546922 2015-01-01 221433 2016-01-01 73649