Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	12239330000
1995-01-01	13656540000
1996-01-01	14793470000
1997-01-01	15715030000
1998-01-01	15533150000
1999-01-01	16346880000
2000-01-01	17734470000
2001-01-01	18358930000
2002-01-01	19360630000
2003-01-01	21645260000
2004-01-01	25183620000
2005-01-01	29322170000
2006-01-01	31267660000
2007-01-01	37156880000
2008-01-01	41353370000
2009-01-01	34427370000
2010-01-01	40659940000
2011-01-01	39704270000
2012-01-01	38226960000
2013-01-01	40158870000