Year	2011 U.S. Dollars
1960-01-01	30699
1961-01-01	31988
1962-01-01	33143
1963-01-01	34343
1964-01-01	36216
1965-01-01	37361
1966-01-01	38405
1967-01-01	40069
1968-01-01	41799
1969-01-01	43827
1970-01-01	46577
1971-01-01	47950
1972-01-01	50590
1973-01-01	53108
1974-01-01	54466
1975-01-01	54443
1976-01-01	57786
1977-01-01	58295
1978-01-01	59842
1979-01-01	60565
1980-01-01	63261
1981-01-01	64268
1982-01-01	65499
1983-01-01	66577
1984-01-01	68238
1985-01-01	69040
1986-01-01	69855
1987-01-01	70941
1988-01-01	72884
1989-01-01	74262
1990-01-01	75776
1991-01-01	76905
1992-01-01	78183
1993-01-01	77937
1994-01-01	80789
1995-01-01	81457
1996-01-01	82404
1997-01-01	84892
1998-01-01	85050
1999-01-01	86860
2000-01-01	88274
2001-01-01	87792
2002-01-01	89114
2003-01-01	89920
2004-01-01	91886
2005-01-01	92187
2006-01-01	93639
2007-01-01	94811
2008-01-01	94036
2009-01-01	91566
2010-01-01	92844
2011-01-01	93317