Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	3738000000
1981-01-01	4107000000
1982-01-01	3986000000
1983-01-01	3988000000
1984-01-01	4034000000
1985-01-01	3615000000
1986-01-01	4091000000
1987-01-01	4788000000
1988-01-01	6210000000
1989-01-01	8575000000
1990-01-01	10341000000
1991-01-01	12272000000
1992-01-01	13678000000
1993-01-01	15178000000
1994-01-01	18712000000
1995-01-01	25961000000
1996-01-01	29781000000
1997-01-01	29645000000
1998-01-01	24649000000
1999-01-01	27302000000
2000-01-01	33577000000
2001-01-01	33169000000
2002-01-01	36999000000
2003-01-01	40767000000
2004-01-01	50498000000
2005-01-01	59696000000
2006-01-01	70174000000
2007-01-01	84962000000
2008-01-01	96369000000
2009-01-01	80221000000
2010-01-01	95908000000
2011-01-01	101107000000
2012-01-01	105825000000
2013-01-01	106997000000