Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	18844681823.3748
1991-01-01	19972952929.3722
1992-01-01	20205423738.1606
1993-01-01	21156546507.9478
1994-01-01	22834760963.4673
1995-01-01	25187919707.5860
1996-01-01	28400405734.0487
1997-01-01	30493679340.0762
1998-01-01	33060516012.3358
1999-01-01	35521922541.8480
2000-01-01	40175520304.3549
2001-01-01	38956778196.9657
2002-01-01	40803375706.5895
2003-01-01	45127735163.0238
2004-01-01	53129999807.8537
2005-01-01	60225714383.9620
2006-01-01	66311288734.7742
2007-01-01	70767225932.5623
2008-01-01	75006674108.3625
2009-01-01	68759546164.7416
2010-01-01	76919816547.8973
2011-01-01	84771894351.0679
2012-01-01	84149410813.0197
2013-01-01	84016017473.6076