Year Dollars 1992-01-01 10252144 1997-01-01 18491497 2002-01-01 35816456 2003-01-01 48664864 2004-01-01 53900468 2005-01-01 73127201 2006-01-01 37746436 2007-01-01 71831730 2008-01-01 57888929 2009-01-01 49195910 2010-01-01 72008552 2011-01-01 75817264 2012-01-01 100377825 2013-01-01 131185512 2014-01-01 79686160 2015-01-01 84848073 2016-01-01 68338549