Year Dollars 1992-01-01 38449777 1997-01-01 132749327 2002-01-01 269810578 2003-01-01 312697783 2004-01-01 287395275 2005-01-01 265548247 2006-01-01 265371590 2007-01-01 259151926 2008-01-01 210888241 2009-01-01 199198771 2010-01-01 183753074 2011-01-01 285878688 2012-01-01 253612950 2013-01-01 272311308 2014-01-01 259561099 2015-01-01 264291263 2016-01-01 205753282