Year	US Dollars, Monthly Level
1961-01-01	502640000000.0000
1962-01-01	555420000000.0000
1963-01-01	594210000000.0000
1964-01-01	666070000000.0000
1965-01-01	726130000000.0000
1966-01-01	791230000000.0000
1967-01-01	828820000000.0000
1968-01-01	926090000000.0000
1969-01-01	1034869999999.9999
1970-01-01	1141160000000.0000
1971-01-01	1222460000000.0000
1972-01-01	1337360000000.0000
1973-01-01	1514030000000.0000
1974-01-01	1618130000000.0000
1975-01-01	1589650000000.0000
1976-01-01	1758830000000.0000
1977-01-01	1864790000000.0000
1978-01-01	1997290000000.0000
1979-01-01	2134409999999.9998
1980-01-01	2241720000000.0000
1981-01-01	2380810000000.0000
1982-01-01	2409560000000.0000
1983-01-01	2491850000000.0000
1984-01-01	2750390000000.0000
1985-01-01	2875620000000.0000
1986-01-01	2961570000000.0000
1987-01-01	3130920000000.0000
1988-01-01	3386760000000.0000
1989-01-01	3643090000000.0000
1990-01-01	3898140000000.0000
1991-01-01	4112380000000.0000
1992-01-01	4325520000000.0005
1993-01-01	4456650000000.0000
1994-01-01	4873380000000.0000
1995-01-01	5344670000000.0000
1996-01-01	5719480000000.0000
1997-01-01	6410920000000.0000
1998-01-01	6772690000000.0000
1999-01-01	7119700000000.0000
2000-01-01	7988010000000.0000
2001-01-01	8031310000000.0000
2002-01-01	8217990000000.0000
2003-01-01	8423170000000.0000
2004-01-01	9164750000000.0000
2005-01-01	9700100000000.0000
2006-01-01	10536670000000.0000
2007-01-01	11259800000000.0000
2008-01-01	11470880000000.0000
2009-01-01	10191020000000.0000
2010-01-01	11353990000000.0000
2011-01-01	12040280000000.0000
2012-01-01	12365910000000.0000
2013-01-01	12687940000000.0000