Year	US Dollars, Monthly Level
1960-01-01	276140000000.0000
1961-01-01	293730000000.0000
1962-01-01	316880000000.0000
1963-01-01	342590000000.0000
1964-01-01	390340000000.0000
1965-01-01	440410000000.0000
1966-01-01	479400000000.0000
1967-01-01	506540000000.0000
1968-01-01	583240000000.0000
1969-01-01	658780000000.0000
1970-01-01	734980000000.0000
1971-01-01	789860000000.0000
1972-01-01	873030000000.0000
1973-01-01	982620000000.0000
1974-01-01	1052329999999.9999
1975-01-01	1030339999999.9999
1976-01-01	1168090000000.0000
1977-01-01	1244500000000.0000
1978-01-01	1349490000000.0000
1979-01-01	1435370000000.0000
1980-01-01	1512410000000.0000
1981-01-01	1593360000000.0000
1982-01-01	1611980000000.0000
1983-01-01	1686450000000.0000
1984-01-01	1866850000000.0000
1985-01-01	1959720000000.0000
1986-01-01	2044200000000.0000
1987-01-01	2168420000000.0000
1988-01-01	2363590000000.0000
1989-01-01	2523590000000.0000
1990-01-01	2653690000000.0000
1991-01-01	2745040000000.0000
1992-01-01	2853720000000.0000
1993-01-01	2990770000000.0000
1994-01-01	3291240000000.0000
1995-01-01	3866450000000.0000
1996-01-01	4058990000000.0000
1997-01-01	4509480000000.0000
1998-01-01	4807640000000.0000
1999-01-01	5089620000000.0000
2000-01-01	5684810000000.0000
2001-01-01	5703020000000.0000
2002-01-01	5839590000000.0000
2003-01-01	5956920000000.0000
2004-01-01	6388880000000.0000
2005-01-01	6691890000000.0000
2006-01-01	7257400000000.0000
2007-01-01	7765710000000.0000
2008-01-01	7866750000000.0000
2009-01-01	6750970000000.0000
2010-01-01	7643340000000.0000
2011-01-01	8020000000000.0000
2012-01-01	8135120000000.0000
2013-01-01	8246350000000.0000