Year Dollars 1992-01-01 134253747 1997-01-01 271750284 2002-01-01 278327305 2003-01-01 296348905 2004-01-01 331907363 2005-01-01 364943890 2006-01-01 526812262 2007-01-01 671068968 2008-01-01 990278318 2009-01-01 923538070 2010-01-01 1185544334 2011-01-01 1295867072 2012-01-01 1316188537 2013-01-01 1282783964 2014-01-01 1287305315 2015-01-01 1221476206