Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	9397063863.818120
1991-01-01	5990489900.972820
1992-01-01	7324114540.967560
1993-01-01	10041918836.348600
1994-01-01	14668716597.115500
1995-01-01	25577724076.795100
1996-01-01	30729954660.442200
1997-01-01	18103140173.645200
1998-01-01	15640802386.262100
1999-01-01	27735493425.481300
2000-01-01	44494397153.967400
2001-01-01	44895780075.238500
2002-01-01	35574215121.679400
2003-01-01	39236385925.031100
2004-01-01	49456930398.191300
2005-01-01	50312437674.082700
2006-01-01	41841049677.485700
2007-01-01	42439671421.590300
2008-01-01	40907366498.317800
2009-01-01	-5934903552.706510
2010-01-01	-9418178582.695000
2011-01-01	760267913.559965
2012-01-01	-12024918481.206900
2013-01-01	-7074869554.665700