Year	US Dollars, Sum Over Component Sub-periods
1993-01-01	0
1994-01-01	0
1995-01-01	0
1996-01-01	0
1997-01-01	368300000
1998-01-01	279050000
1999-01-01	269830000
2000-01-01	226740000
2001-01-01	288250000
2002-01-01	282480000
2003-01-01	289970000
2004-01-01	714800000
2005-01-01	1383040000
2006-01-01	1676380000
2007-01-01	2485340000
2008-01-01	3779310000
2009-01-01	2816720000
2010-01-01	1962950000
2011-01-01	2233420000
2012-01-01	2177570000
2013-01-01	2677690000