Year Dollars 1992-01-01 336615888 1997-01-01 317675557 2002-01-01 225245480 2003-01-01 122183896 2004-01-01 126383903 2005-01-01 188901020 2006-01-01 217440890 2007-01-01 261000930 2008-01-01 362538153 2009-01-01 245347397 2010-01-01 311248432 2011-01-01 384410711 2012-01-01 457648596 2013-01-01 526316325 2014-01-01 438270288 2015-01-01 221903853 2016-01-01 174091282