Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	21733120073.11780
1991-01-01	22652357893.81840
1992-01-01	18541905063.90190
1993-01-01	27144804066.57930
1994-01-01	13374331942.30910
1995-01-01	1192728509.15008
1996-01-01	-6752538893.03042
1997-01-01	10766000204.57160
1998-01-01	5196523966.54290
1999-01-01	-6073912848.35974
2000-01-01	-14226571574.46430
2001-01-01	-10990640926.97340
2002-01-01	-9375547358.08498
2003-01-01	-11591318888.61780
2004-01-01	-24986709878.24330
2005-01-01	-20450465939.96080
2006-01-01	-20150457691.12090
2007-01-01	-15011286156.42380
2008-01-01	2351159577.54065
2009-01-01	40326504387.95030
2010-01-01	54885180661.49530
2011-01-01	56021230885.88400
2012-01-01	63714254738.93140
2013-01-01	56808639728.18830