Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	1366190000
1980-01-01	1665010000
1981-01-01	2160440000
1982-01-01	1739760000
1983-01-01	1633220000
1984-01-01	1869910000
1985-01-01	2033490000
1986-01-01	1798420000
1987-01-01	1946550000
1988-01-01	2255390000
1989-01-01	3124140000
1990-01-01	3752180000
1991-01-01	3296180000
1992-01-01	4080060000
1993-01-01	3954360000
1994-01-01	4391830000
1995-01-01	4928780000
1996-01-01	5037880000
1997-01-01	6875820000
1998-01-01	7897290000
1999-01-01	7194250000
2000-01-01	9498230000
2001-01-01	9321930000
2002-01-01	9551350000
2003-01-01	10446990000
2004-01-01	12583530000
2005-01-01	16047470000
2006-01-01	19475740000
2007-01-01	23954200000
2008-01-01	30450530000
2009-01-01	27728350000
2010-01-01	31598900000
2011-01-01	38209110000
2012-01-01	39863610000
2013-01-01	39127380000
2014-01-01	40763760000