Year	2004-2006 = 100
1961	16.88
1962	18.75
1963	19.13
1964	18.29
1965	20.04
1966	21.59
1967	26.12
1968	29.07
1969	33.4
1970	33.42
1971	33.21
1972	32.94
1973	32.63
1974	29.69
1975	23.98
1976	19.97
1977	17.31
1978	15.51
1979	13.38
1980	13.64
1981	16.44
1982	25.25
1983	27.9
1984	32.21
1985	36.64
1986	38.02
1987	40.64
1988	45.38
1989	50.11
1990	48.39
1991	58.21
1992	67.29
1993	70.33
1994	69.48
1995	71.49
1996	74.23
1997	78.85
1998	80.37
1999	83.79
2000	91.38
2001	92
2002	89.81
2003	92.94
2004	95.37
2005	100.56
2006	104.06
2007	99.72
2008	94.39
2009	92.96
2010	96.76
2011	96.97
2012	91.71
2013	91.36
2014	91.84
2015	89.17
2016	89.23