Year	US Dollars, Monthly Level
1960-01-01	13063351518.856200
1961-01-01	12776850072.505800
1962-01-01	12980666903.383300
1963-01-01	13991875554.588200
1964-01-01	15857844159.951700
1965-01-01	16125434527.015902
1966-01-01	16690975378.926003
1967-01-01	17704889773.030000
1968-01-01	18828660792.781300
1969-01-01	19873439407.167004
1970-01-01	22572117136.894200
1971-01-01	24627045112.557100
1972-01-01	28341189853.620200
1973-01-01	39398205418.801800
1974-01-01	55111632392.426796
1975-01-01	54172858028.818700
1976-01-01	56757379622.820800
1977-01-01	64602059802.054300
1978-01-01	76958114934.637600
1979-01-01	100500430649.059000
1980-01-01	113904662953.877000
1981-01-01	102257770373.444990
1982-01-01	99960989346.790700
1983-01-01	99642607698.312500
1984-01-01	104651028651.451000
1985-01-01	109307594514.342000
1986-01-01	125462115496.863000
1987-01-01	154458282815.256000
1988-01-01	189438606389.529020
1989-01-01	199852946516.343000
1990-01-01	224126789548.143980
1991-01-01	210038247750.336000
1992-01-01	220671155564.706000
1993-01-01	204545741482.828980
1994-01-01	230077032913.464000
1995-01-01	268319768617.814030
1996-01-01	289336554392.355040
1997-01-01	309430041992.038000
1998-01-01	313400380343.680970
1999-01-01	317322912651.838000
2000-01-01	334609179157.159000
2001-01-01	325065091559.663000
2002-01-01	338036840267.088000
2003-01-01	381630705373.307000
2004-01-01	455572522104.460000
2005-01-01	489974070556.857000
2006-01-01	561599586810.637000
2007-01-01	625377112530.444100
2008-01-01	634644511472.574000
2009-01-01	484147421959.847960
2010-01-01	559824283444.499000
2011-01-01	637625647814.786000
2012-01-01	639974981993.686000
2013-01-01	646221622072.390000
2014-01-01	673609531161.882900
2015-01-01	609620963472.687000
2016-01-01	578308386092.321000
2017-01-01	604376632429.560000