Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	3789843482.23466
1991-01-01	4145181695.24059
1992-01-01	3900293659.43777
1993-01-01	3680073374.11108
1994-01-01	3486345998.97504
1995-01-01	3572356677.06955
1996-01-01	3780659195.62003
1997-01-01	3732107508.37841
1998-01-01	3562541077.07604
1999-01-01	3968944935.60113
2000-01-01	3774808796.21576
2001-01-01	4085485633.09635
2002-01-01	4343196836.60200
2003-01-01	5170819373.61271
2004-01-01	6257821957.20261
2005-01-01	8565592654.99811
2006-01-01	10123275393.40870
2007-01-01	10921276150.14080
2008-01-01	10970829072.57210
2009-01-01	10973526276.59420
2010-01-01	12425240032.67840
2011-01-01	13099456590.42080
2012-01-01	13302866292.50030
2013-01-01	13351777696.88140