Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	9397063863.818120
1991-01-01	5990489900.972820
1992-01-01	7325768960.335300
1993-01-01	10041918836.348600
1994-01-01	14669448715.132900
1995-01-01	25577724076.795100
1996-01-01	30730687914.747000
1997-01-01	18103862190.961500
1998-01-01	15640802386.262100
1999-01-01	27736166584.391700
2000-01-01	44493723802.416200
2001-01-01	44894488426.287200
2002-01-01	35574215121.679400
2003-01-01	39236385925.031100
2004-01-01	49456930398.191300
2005-01-01	50311612392.971400
2006-01-01	41841931265.519600
2007-01-01	42439671421.590300
2008-01-01	40905493064.391500
2009-01-01	-5933151293.021630
2010-01-01	-9419149228.740830
2011-01-01	761278908.125869
2012-01-01	-12025919223.424000
2013-01-01	-7074869554.665700