Year	2011 U.S. Dollars
1960-01-01	32057
1961-01-01	33454
1962-01-01	34765
1963-01-01	34501
1964-01-01	36827
1965-01-01	37901
1966-01-01	38143
1967-01-01	40293
1968-01-01	42256
1969-01-01	44140
1970-01-01	44211
1971-01-01	45606
1972-01-01	46575
1973-01-01	47730
1974-01-01	47729
1975-01-01	47775
1976-01-01	49839
1977-01-01	50953
1978-01-01	51740
1979-01-01	53274
1980-01-01	53485
1981-01-01	53893
1982-01-01	55717
1983-01-01	57189
1984-01-01	58700
1985-01-01	59652
1986-01-01	61140
1987-01-01	61044
1988-01-01	61443
1989-01-01	62069
1990-01-01	63421
1991-01-01	64625
1992-01-01	66691
1993-01-01	67687
1994-01-01	71688
1995-01-01	72756
1996-01-01	73909
1997-01-01	75006
1998-01-01	75468
1999-01-01	76665
2000-01-01	78820
2001-01-01	78508
2002-01-01	78774
2003-01-01	80021
2004-01-01	82341
2005-01-01	83449
2006-01-01	84529
2007-01-01	83547
2008-01-01	81644
2009-01-01	78597
2010-01-01	81510
2011-01-01	82378