Year	US Dollars, Sum Over Component Sub-periods
1988-01-01	29114870000
1989-01-01	30549960000
1990-01-01	42839890000
1991-01-01	40137960000
1992-01-01	53219540000
1993-01-01	45588630000
1994-01-01	58043780000
1995-01-01	61646710000
1996-01-01	70557010000
1997-01-01	74075260000
1998-01-01	65725640000
1999-01-01	57535830000
2000-01-01	55410760000
2001-01-01	57644820000
2002-01-01	62754870000
2003-01-01	74309460000
2004-01-01	83244070000
2005-01-01	90020200000
2006-01-01	100417070000
2007-01-01	121697160000
2008-01-01	127751840000
2009-01-01	103280080000
2010-01-01	107970130000
2011-01-01	113707650000
2012-01-01	103937740000
2013-01-01	107338130000