Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	130036273277.733
1991-01-01	128509357413.951
1992-01-01	134856685922.270
1993-01-01	146970411372.987
1994-01-01	166630060765.795
1995-01-01	192883216553.935
1996-01-01	204803060114.632
1997-01-01	218439840915.518
1998-01-01	219950005336.509
1999-01-01	247635641520.442
2000-01-01	288197830685.752
2001-01-01	270666329402.774
2002-01-01	262491759772.830
2003-01-01	283693816463.643
2004-01-01	328368869731.187
2005-01-01	370071730683.264
2006-01-01	398453106863.163
2007-01-01	429465012915.086
2008-01-01	456427517621.988
2009-01-01	321723639443.365
2010-01-01	392108971196.079
2011-01-01	461830405661.570
2012-01-01	462871296211.357
2013-01-01	465345467783.036