Year	US Dollars, Monthly Level
1960-01-01	4495121626.367240
1961-01-01	5786061347.822740
1962-01-01	5619460675.303250
1963-01-01	6712532865.011430
1964-01-01	7894772702.785540
1965-01-01	8137286644.874770
1966-01-01	9462855092.337950
1967-01-01	11592284312.924300
1968-01-01	12967004940.936800
1969-01-01	15096649566.252500
1970-01-01	18972719950.709900
1971-01-01	19810988092.632103
1972-01-01	23477162337.662300
1973-01-01	38345181253.369705
1974-01-01	61949578434.809100
1975-01-01	57838459180.270200
1976-01-01	64957781376.620510
1977-01-01	71356747747.130200
1978-01-01	79941243221.901300
1979-01-01	109844962494.586990
1980-01-01	141260041320.375980
1981-01-01	142689707804.922000
1982-01-01	131406420650.471010
1983-01-01	126448439560.562000
1984-01-01	136182332639.424010
1985-01-01	130359384738.121000
1986-01-01	127560355661.421000
1987-01-01	150844498198.498020
1988-01-01	187314442581.094000
1989-01-01	209490608899.764000
1990-01-01	235066645009.432980
1991-01-01	237578581586.988000
1992-01-01	233426120540.382000
1993-01-01	241929101892.645020
1994-01-01	275946333260.113040
1995-01-01	336173906498.406000
1996-01-01	349261150765.715000
1997-01-01	338727301442.802000
1998-01-01	279430130455.951000
1999-01-01	311141090384.656000
2000-01-01	379978562482.206000
2001-01-01	349063604269.481000
2002-01-01	337670852451.914000
2003-01-01	383042031877.828000
2004-01-01	453729619054.923000
2005-01-01	518761532102.535950
2006-01-01	578829472888.574000
2007-01-01	624018129628.684100
2008-01-01	763071081551.954000
2009-01-01	551498069605.376000
2010-01-01	694479045732.091000
2011-01-01	858328648487.038000
2012-01-01	883165830589.097000
2013-01-01	832073581782.943000
2014-01-01	812279540916.472000
2015-01-01	648247618211.260000
2016-01-01	607553664439.953000
2017-01-01	672946090894.315100