Year	US Dollars, Sum Over Component Sub-periods
1971-01-01	389820000
1972-01-01	364090000
1973-01-01	591440000
1974-01-01	406540000
1975-01-01	1703560000
1976-01-01	1724480000
1977-01-01	572900000
1978-01-01	3063030000
1979-01-01	1977160000
1980-01-01	1739350000
1981-01-01	773170000
1982-01-01	1035230000
1983-01-01	3055950000
1984-01-01	4999040000
1985-01-01	5201380000
1986-01-01	5238850000
1987-01-01	5500600000
1988-01-01	12623580000
1989-01-01	15995160000
1990-01-01	22433060000
1991-01-01	17693730000
1992-01-01	18234600000
1993-01-01	11549630000
1994-01-01	1474460000
1995-01-01	-2773890000
1996-01-01	699100000
1997-01-01	-2733380000
1998-01-01	-10592080000
1999-01-01	-13272130000
2000-01-01	-7989640000
2001-01-01	-10328540000
2002-01-01	-17800980000
2003-01-01	-17711260000
2004-01-01	24452440000
2005-01-01	30313720000
2006-01-01	55806010000
2007-01-01	58752820000
2008-01-01	47339370000
2009-01-01	82460930000
2010-01-01	72626870000
2011-01-01	98072490000
2012-01-01	98169450000
2013-01-01	102112880000