Year	US Dollars, Monthly Level
1961-01-01	542360000000.0000
1962-01-01	592420000000.0000
1963-01-01	650330000000.0000
1964-01-01	715170000000.0000
1965-01-01	775510000000.0000
1966-01-01	856470000000.0000
1967-01-01	925030000000.0000
1968-01-01	1023040000000.0000
1969-01-01	1153510000000.0000
1970-01-01	1273280000000.0000
1971-01-01	1347110000000.0000
1972-01-01	1482100000000.0000
1973-01-01	1665210000000.0000
1974-01-01	1724130000000.0000
1975-01-01	1615340000000.0000
1976-01-01	1822130000000.0000
1977-01-01	1910840000000.0000
1978-01-01	2025270000000.0000
1979-01-01	2194550000000.0002
1980-01-01	2221290000000.0000
1981-01-01	2258830000000.0000
1982-01-01	2239110000000.0000
1983-01-01	2313590000000.0000
1984-01-01	2593030000000.0000
1985-01-01	2715840000000.0000
1986-01-01	2894140000000.0000
1987-01-01	3116110000000.0000
1988-01-01	3400080000000.0000
1989-01-01	3715920000000.0000
1990-01-01	3958750000000.0000
1991-01-01	4067220000000.0000
1992-01-01	4270750000000.0000
1993-01-01	4360990000000.0000
1994-01-01	4780350000000.0000
1995-01-01	5205620000000.0000
1996-01-01	5653370000000.0000
1997-01-01	6296770000000.0000
1998-01-01	6781880000000.0000
1999-01-01	7341830000000.0000
2000-01-01	8263660000000.0000
2001-01-01	8265889999999.9990
2002-01-01	8498850000000.0000
2003-01-01	8868990000000.0000
2004-01-01	9662730000000.0000
2005-01-01	10300340000000.0000
2006-01-01	11123560000000.0000
2007-01-01	11728470000000.0000
2008-01-01	11766520000000.0000
2009-01-01	10373490000000.0000
2010-01-01	11553740000000.0000
2011-01-01	12176720000000.0000
2012-01-01	12310640000000.0000
2013-01-01	12526720000000.0000