Year	US Dollars, Monthly Level
1960-01-01	425853297.1993010
1961-01-01	505042955.4775090
1962-01-01	489311158.0665200
1963-01-01	547335205.3216470
1964-01-01	619623295.7037259
1965-01-01	613029330.3855460
1966-01-01	677543947.8425110
1967-01-01	780165092.3468220
1968-01-01	866274126.4291301
1969-01-01	962574452.5252050
1970-01-01	1120464782.6503599
1971-01-01	1315091902.4525700
1972-01-01	1596343422.8886600
1973-01-01	2123052228.3405700
1974-01-01	2636767475.9115100
1975-01-01	3173671424.7224800
1976-01-01	3296290374.4435300
1977-01-01	4389925753.1402400
1978-01-01	5700530933.5785410
1979-01-01	7132030323.8296900
1980-01-01	8382123362.2203900
1981-01-01	7688941136.1438800
1982-01-01	8069114535.7882190
1983-01-01	8598366740.4061300
1984-01-01	9617926476.5870190
1985-01-01	10354238481.4621000
1986-01-01	12578342771.8212990
1987-01-01	15986379940.6771000
1988-01-01	18670699576.8900030
1989-01-01	20745835495.9147000
1990-01-01	23776983778.4899980
1991-01-01	24238681221.9017000
1992-01-01	28471268727.0072980
1993-01-01	28983202108.1434000
1994-01-01	34015506950.4820000
1995-01-01	43172862479.7286000
1996-01-01	47905973926.8025050
1997-01-01	56085222188.9360050
1998-01-01	64403883747.0905000
1999-01-01	70810280744.2669000
2000-01-01	77078461558.5649000
2001-01-01	82599929063.9456000
2002-01-01	87913861866.2146000
2003-01-01	92925188358.2741000
2004-01-01	104166343936.6640000
2005-01-01	109374023554.5670000
2006-01-01	109009651370.3600000
2007-01-01	121164847764.6230000
2008-01-01	125657953283.2200000
2009-01-01	115209297890.0609900
2010-01-01	117279695778.0050000
2011-01-01	127040805761.6510000
2012-01-01	118364445517.1280000
2013-01-01	116517543213.1080000
2014-01-01	121423042006.7229900
2015-01-01	123256681544.7490000
2016-01-01	130779040305.6510000
2017-01-01	137420740753.4100000