Year	US Dollars, Monthly Level
1960-01-01	344000000.0000000
1961-01-01	317000000.0000000
1962-01-01	424000000.0000000
1963-01-01	563000000.0000000
1964-01-01	405000000.0000000
1965-01-01	465000000.0000000
1966-01-01	717000000.0000000
1967-01-01	996000000.0000000
1968-01-01	1464000000.0000000
1969-01-01	1825000000.0000000
1970-01-01	1984000000.0000000
1971-01-01	2395000000.0000000
1972-01-01	2523000000.0000000
1973-01-01	4219000000.0000005
1974-01-01	6852000000.0000000
1975-01-01	7276000000.0000000
1976-01-01	8774000000.0000000
1977-01-01	10812000000.0000000
1978-01-01	14972000000.0000000
1979-01-01	20339000000.0000000
1980-01-01	22293000000.0000000
1981-01-01	26131000000.0000000
1982-01-01	24251000000.0000000
1983-01-01	26192000000.0000000
1984-01-01	30634000000.0000000
1985-01-01	31129000000.0000000
1986-01-01	31949000000.0000000
1987-01-01	41016000000.0000000
1988-01-01	51820000000.0000000
1989-01-01	61450000000.0000000
1990-01-01	69843678000.0000000
1991-01-01	81524856000.0000000
1992-01-01	81775257000.0000000
1993-01-01	83800145000.0000000
1994-01-01	102348176000.0000000
1995-01-01	135118932000.0000000
1996-01-01	150339101000.0000000
1997-01-01	144616376000.0000000
1998-01-01	93281755000.0000000
1999-01-01	119752283000.0000000
2000-01-01	160481018000.0000000
2001-01-01	141097821000.0000000
2002-01-01	152126153000.0000000
2003-01-01	178826658000.0000000
2004-01-01	224462687000.0000000
2005-01-01	261238264000.0000000
2006-01-01	309382632000.0000000
2007-01-01	356845734000.0000000
2008-01-01	435274736000.0000000
2009-01-01	323084522000.0000000
2010-01-01	425212160000.0000000
2011-01-01	524413089000.0000000
2012-01-01	519584474000.0000000
2013-01-01	515585514000.0000000
2014-01-01	525514507000.0000000
2015-01-01	436498974000.0000000
2016-01-01	406192888000.0000000
2017-01-01	478478297000.0000000