Year	US Dollars, Sum Over Component Sub-periods
1996-01-01	34967250000
1997-01-01	35149000000
1998-01-01	38617210000
1999-01-01	40374740000
2000-01-01	40219210000
2001-01-01	39864050000
2002-01-01	40743140000
2003-01-01	48247260000
2004-01-01	58728840000
2005-01-01	61362290000
2006-01-01	68084890000
2007-01-01	79031300000
2008-01-01	90918090000
2009-01-01	69206910000
2010-01-01	74935460000
2011-01-01	79646180000
2012-01-01	69758420000
2013-01-01	72658130000