Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	4909500000
1981-01-01	5976800000
1982-01-01	6897000000
1983-01-01	6422600000
1984-01-01	6285000000
1985-01-01	5176000000
1986-01-01	6184600000
1987-01-01	8254000000
1988-01-01	8945200000
1989-01-01	9435300000
1990-01-01	10246200000
1991-01-01	10617800000
1992-01-01	11182400000
1993-01-01	13663400000
1994-01-01	17574300000
1995-01-01	23770400000
1996-01-01	24177500000
1997-01-01	27207000000
1998-01-01	26334200000
1999-01-01	27114300000
2000-01-01	31583800000
2001-01-01	30218500000
2002-01-01	30582100000
2003-01-01	34941900000
2004-01-01	44441300000
2005-01-01	49679200000
2006-01-01	56883200000
2007-01-01	72958600000
2008-01-01	90363800000
2009-01-01	73570000000
2010-01-01	87208100000
2011-01-01	95210700000
2012-01-01	111517600000
2013-01-01	113080400000