Year	US Dollars, Sum Over Component Sub-periods
1992-01-01	28260700000
1993-01-01	26746930000
1994-01-01	30061760000
1995-01-01	24354270000
1996-01-01	24525500000
1997-01-01	21924640000
1998-01-01	23262610000
1999-01-01	23395340000
2000-01-01	23001650000
2001-01-01	23925540000
2002-01-01	25931490000
2003-01-01	32560100000
2004-01-01	37847480000
2005-01-01	42270920000
2006-01-01	45658500000
2007-01-01	54265290000
2008-01-01	63446080000
2009-01-01	54498440000
2010-01-01	54482950000
2011-01-01	61160350000
2012-01-01	60507230000
2013-01-01	65148220000