Year Dollars 1992-01-01 62783722 1997-01-01 111847091 2002-01-01 72564077 2003-01-01 118497919 2004-01-01 141103903 2005-01-01 141245829 2006-01-01 166483689 2007-01-01 167610522 2008-01-01 195967257 2009-01-01 192155349 2010-01-01 254008316 2011-01-01 217382280 2012-01-01 220671864 2013-01-01 176320779 2014-01-01 195425500 2015-01-01 181420924 2016-01-01 225990727