Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	23301770000
1991-01-01	23607800000
1992-01-01	28082070000
1993-01-01	28479790000
1994-01-01	33482400000
1995-01-01	44355240000
1996-01-01	49126010000
1997-01-01	55290150000
1998-01-01	61302550000
1999-01-01	67909140000
2000-01-01	73699470000
2001-01-01	77635310000
2002-01-01	84344490000
2003-01-01	88474080000
2004-01-01	100071800000
2005-01-01	102764110000
2006-01-01	104475070000
2007-01-01	115100170000
2008-01-01	118478210000
2009-01-01	107870180000
2010-01-01	109406940000
2011-01-01	118203390000
2012-01-01	110348730000
2013-01-01	108713190000