Year	US Dollars, Monthly Level
1960-01-01	636176214.9345120
1961-01-01	733256546.0317960
1962-01-01	767242826.7795600
1963-01-01	855550891.0998890
1964-01-01	971099768.0367520
1965-01-01	1041157652.7746200
1966-01-01	1043845199.8251901
1967-01-01	1073855373.1528300
1968-01-01	1232956901.7071600
1969-01-01	1465332111.6015500
1970-01-01	1621606123.6226000
1971-01-01	1839335706.1591900
1972-01-01	2110865054.2249900
1973-01-01	2794452258.8251400
1974-01-01	3813573644.8256903
1975-01-01	3775672890.2036796
1976-01-01	4185928061.7647200
1977-01-01	5426521105.7593990
1978-01-01	7143992508.9901800
1979-01-01	9857323220.9367200
1980-01-01	11108647980.7214010
1981-01-01	10586993925.4489000
1982-01-01	9701162735.2560200
1983-01-01	9161724155.1804600
1984-01-01	9641973510.6635900
1985-01-01	9998513135.5463200
1986-01-01	11545049195.0189000
1987-01-01	13640074653.6433980
1988-01-01	15525528798.8924000
1989-01-01	17481670639.3163000
1990-01-01	20690343409.6627000
1991-01-01	20738478318.7444000
1992-01-01	22450395778.2435000
1993-01-01	21796479677.5785980
1994-01-01	25881643846.0916000
1995-01-01	31225684427.4520000
1996-01-01	34050838563.6829030
1997-01-01	39714741357.0593000
1998-01-01	43245260868.6180950
1999-01-01	46544988143.4756000
2000-01-01	51092559237.6180950
2001-01-01	50407630833.6844000
2002-01-01	52222756975.7461000
2003-01-01	54008061025.8156000
2004-01-01	61483044070.7744000
2005-01-01	68516681380.0483900
2006-01-01	73354790898.2170100
2007-01-01	83722933531.7382000
2008-01-01	84278692840.0268100
2009-01-01	62440961014.5354000
2010-01-01	62931734317.4862060
2011-01-01	72984093068.4606000
2012-01-01	70388526263.9828000
2013-01-01	73471549955.6272900
2014-01-01	82117601861.4494000
2015-01-01	76866148465.2036900
2016-01-01	80940450440.3398000
2017-01-01	88789328256.0868000