Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	3789843482.23466
1991-01-01	4145181695.24059
1992-01-01	3901120869.12164
1993-01-01	3680073374.11108
1994-01-01	3485613880.95761
1995-01-01	3572356677.06955
1996-01-01	3780659195.62003
1997-01-01	3731385491.06203
1998-01-01	3561866991.72560
1999-01-01	3968271776.69075
2000-01-01	3774808796.21576
2001-01-01	4086131457.57202
2002-01-01	4343196836.60200
2003-01-01	5170819373.61271
2004-01-01	6257821957.20261
2005-01-01	8566417936.10949
2006-01-01	10124156981.44260
2007-01-01	10921276150.14080
2008-01-01	10971765789.53530
2009-01-01	10974402406.43660
2010-01-01	12426210678.72420
2011-01-01	13100467584.98670
2012-01-01	13303867034.71740
2013-01-01	13350806940.90520