Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	18844681823.3748
1991-01-01	19972080443.2230
1992-01-01	20203769318.7928
1993-01-01	21156546507.9478
1994-01-01	22834028845.4499
1995-01-01	25187919707.5860
1996-01-01	28400405734.0487
1997-01-01	30493679340.0762
1998-01-01	33061190097.6862
1999-01-01	35521922541.8480
2000-01-01	40175520304.3549
2001-01-01	38956132372.4900
2002-01-01	40803375706.5895
2003-01-01	45127735163.0238
2004-01-01	53129231222.4991
2005-01-01	60226539665.0734
2006-01-01	66310407146.7403
2007-01-01	70768156749.5869
2008-01-01	75007610825.3257
2009-01-01	68758670034.8992
2010-01-01	76920787193.9432
2011-01-01	84771894351.0679
2012-01-01	84148410070.8025
2013-01-01	84015046717.6314