Year	US Dollars, Monthly Level
1960-01-01	32000000.00000
1961-01-01	41000000.00000
1962-01-01	56000000.00000
1963-01-01	87000000.00000
1964-01-01	118000000.00000
1965-01-01	173000000.00000
1966-01-01	251000000.00000
1967-01-01	321000000.00000
1968-01-01	457000000.00000
1969-01-01	624000000.00000
1970-01-01	836000000.00000
1971-01-01	1067000000.00000
1972-01-01	1625000000.00000
1973-01-01	3221000000.00000
1974-01-01	4462000000.00000
1975-01-01	4945000000.00000
1976-01-01	7716000000.00000
1977-01-01	10048000000.00000
1978-01-01	12722000000.00000
1979-01-01	15057000000.00000
1980-01-01	17512000000.00000
1981-01-01	21268000000.00000
1982-01-01	21853000000.00000
1983-01-01	24446000000.00000
1984-01-01	29245000000.00000
1985-01-01	30282000000.00000
1986-01-01	34715000000.00000
1987-01-01	47182000000.00000
1988-01-01	60690000000.00000
1989-01-01	62360000000.00000
1990-01-01	65015731000.00000
1991-01-01	71870121000.00000
1992-01-01	76631515000.00000
1993-01-01	82235866000.00000
1994-01-01	96013237000.00000
1995-01-01	125057987000.00000
1996-01-01	129715136000.00000
1997-01-01	136164204000.00002
1998-01-01	132313143000.00000
1999-01-01	143685459000.00000
2000-01-01	172267511000.00000
2001-01-01	150439144000.00000
2002-01-01	162470527000.00000
2003-01-01	193817442000.00000
2004-01-01	253844673000.00000
2005-01-01	284418741000.00000
2006-01-01	325464849000.00000
2007-01-01	371489087000.00000
2008-01-01	422007329000.00000
2009-01-01	363533562000.00000
2010-01-01	466383761000.00000
2011-01-01	555213655000.00000
2012-01-01	547869791999.99994
2013-01-01	559632434000.00000
2014-01-01	572664607000.00000
2015-01-01	526756503999.99994
2016-01-01	495425940000.00000
2017-01-01	573694422000.00000