Year	2004-2006 = 100
1961	19.39
1962	19.63
1963	20.6
1964	20.44
1965	21.01
1966	22.09
1967	22.93
1968	24.22
1969	24.04
1970	24.16
1971	24.61
1972	24.65
1973	25.99
1974	26.77
1975	27.79
1976	29.39
1977	31.18
1978	33.41
1979	36.54
1980	39.46
1981	42.63
1982	41.3
1983	41.22
1984	37.32
1985	42.53
1986	40.35
1987	38.6
1988	40
1989	42.27
1990	43.79
1991	46.44
1992	49.27
1993	51.63
1994	56.23
1995	60.57
1996	61.57
1997	65.23
1998	71.37
1999	77.73
2000	82.89
2001	88.27
2002	92.99
2003	97.8
2004	98.88
2005	101.41
2006	99.71
2007	99.87
2008	102.29
2009	102.32
2010	104
2011	104.14