Year	US Dollars, Monthly Level
1960-01-01	4561004407.307651
1961-01-01	5150205588.641069
1962-01-01	5376406274.079220
1963-01-01	6003774830.677071
1964-01-01	7047025542.173161
1965-01-01	7486451010.165260
1966-01-01	8032093883.949990
1967-01-01	8394858144.702489
1968-01-01	9270827594.401001
1969-01-01	11014871881.262900
1970-01-01	13452682100.473900
1971-01-01	15432884402.029501
1972-01-01	17542167008.626400
1973-01-01	24774544800.599400
1974-01-01	33716427504.806700
1975-01-01	35482011633.433400
1976-01-01	40528700669.472000
1977-01-01	46658807853.776405
1978-01-01	53918315862.102196
1979-01-01	68194425630.648200
1980-01-01	77800053981.316100
1981-01-01	67102046987.071600
1982-01-01	64266632052.529205
1983-01-01	60853626030.863600
1984-01-01	62102604725.495400
1985-01-01	65105440196.218300
1986-01-01	75595624596.178300
1987-01-01	91512439464.670400
1988-01-01	99176899477.638100
1989-01-01	104517316430.793990
1990-01-01	126609592731.305000
1991-01-01	127025396798.243000
1992-01-01	134134305181.717000
1993-01-01	124307305773.444990
1994-01-01	141695105870.126000
1995-01-01	174237033462.824000
1996-01-01	196471479635.064000
1997-01-01	190331357353.665000
1998-01-01	194080529595.020020
1999-01-01	205480267798.473000
2000-01-01	217703582672.691000
2001-01-01	209038594022.547000
2002-01-01	219012167806.533000
2003-01-01	265026823527.274020
2004-01-01	317759073461.907960
2005-01-01	362764638733.263000
2006-01-01	418450489828.229000
2007-01-01	493623316683.391970
2008-01-01	579535085768.885000
2009-01-01	443497461580.697000
2010-01-01	511760856134.610000
2011-01-01	595090110587.244000
2012-01-01	585467854304.554900
2013-01-01	589571457574.488000
2014-01-01	590509306163.037000
2015-01-01	512945032278.493040
2016-01-01	499772992478.001040
2017-01-01	577105674590.917000