Year	US Dollars, Monthly Level
1960-01-01	15075000000.000000
1961-01-01	14758000000.000000
1962-01-01	16463999999.999998
1963-01-01	17209000000.000000
1964-01-01	18752000000.000000
1965-01-01	21430000000.000000
1966-01-01	25619000000.000000
1967-01-01	26896000000.000000
1968-01-01	33253000000.000000
1969-01-01	36043000000.000000
1970-01-01	39951000000.000000
1971-01-01	45562000000.000000
1972-01-01	55582000000.000000
1973-01-01	69473000000.000000
1974-01-01	107995700000.000000
1975-01-01	103842800000.000000
1976-01-01	129896099999.999980
1977-01-01	157548500000.000000
1978-01-01	183093000000.000000
1979-01-01	218858300000.000000
1980-01-01	256984100000.000000
1981-01-01	273352300000.000000
1982-01-01	254884600000.000000
1983-01-01	269878300000.000030
1984-01-01	346364400000.000000
1985-01-01	352462900000.000000
1986-01-01	382295400000.000000
1987-01-01	424442100000.000000
1988-01-01	459542400000.000000
1989-01-01	473210900000.000000
1990-01-01	495310600000.000000
1991-01-01	488453100000.000000
1992-01-01	532663000000.000000
1993-01-01	580658000000.000000
1994-01-01	663255000000.000000
1995-01-01	743542000000.000000
1996-01-01	795291000000.000000
1997-01-01	870669000000.000000
1998-01-01	911898000000.000000
1999-01-01	1024617000000.000000
2000-01-01	1218021000000.000000
2001-01-01	1140999000000.000000
2002-01-01	1161365000000.000000
2003-01-01	1257121000000.000000
2004-01-01	1469705000000.000000
2005-01-01	1673454000000.000000
2006-01-01	1853938000000.000000
2007-01-01	1956961000000.000000
2008-01-01	2103639999999.999800
2009-01-01	1559625000000.000000
2010-01-01	1913161000000.000000
2011-01-01	2208056000000.000000
2012-01-01	2276302000000.000000
2013-01-01	2268370000000.000000
2014-01-01	2356364000000.000000
2015-01-01	2248184000000.000000
2016-01-01	2187599000000.000200
2017-01-01	2341964000000.000000