Year	2011 U.S. Dollars
1963-01-01	5996
1964-01-01	6460
1965-01-01	6483
1966-01-01	7086
1967-01-01	7244
1968-01-01	7676
1969-01-01	8528
1970-01-01	8955
1971-01-01	9563
1972-01-01	9761
1973-01-01	10628
1974-01-01	11137
1975-01-01	11678
1976-01-01	12480
1977-01-01	13519
1978-01-01	14244
1979-01-01	15223
1980-01-01	14847
1981-01-01	15560
1982-01-01	16433
1983-01-01	18275
1984-01-01	20182
1985-01-01	20906
1986-01-01	22655
1987-01-01	24114
1988-01-01	26103
1989-01-01	26769
1990-01-01	28409
1991-01-01	30226
1992-01-01	31363
1993-01-01	32958
1994-01-01	34740
1995-01-01	36793
1996-01-01	38607
1997-01-01	40138
1998-01-01	40267
1999-01-01	43812
2000-01-01	45717
2001-01-01	46617
2002-01-01	48605
2003-01-01	50035
2004-01-01	51376
2005-01-01	52711
2006-01-01	54734
2007-01-01	56836
2008-01-01	57787
2009-01-01	58147
2010-01-01	60984
2011-01-01	62119