Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	3687000000
1980-01-01	4704000000
1981-01-01	4979000000
1982-01-01	5230000000
1983-01-01	3943000000
1984-01-01	3528000000
1985-01-01	3627000000
1986-01-01	4356000000
1987-01-01	4204000000
1988-01-01	5151000000
1989-01-01	5791000000
1990-01-01	7348000000
1991-01-01	7096000000
1992-01-01	7264000000
1993-01-01	9200000000
1994-01-01	10049000000
1995-01-01	12412000000
1996-01-01	13719000000
1997-01-01	17522000000
1998-01-01	18008000000
1999-01-01	14171000000
2000-01-01	16660000000
2001-01-01	17081000000
2002-01-01	14509000000
2003-01-01	15378000000
2004-01-01	17261000000
2005-01-01	24356000000
2006-01-01	29116000000
2007-01-01	37173000000
2008-01-01	47140000000
2009-01-01	46974000000
2010-01-01	62434000000
2011-01-01	76141000000
2012-01-01	80905000000
2013-01-01	86229000000
2014-01-01	89692000000