Year	2004-2006 = 100
1961	23.17
1962	24.87
1963	25.69
1964	25.78
1965	27.55
1966	27.73
1967	29.37
1968	28.7
1969	31.49
1970	31.62
1971	31.07
1972	27.42
1973	25.11
1974	28.59
1975	32.47
1976	33.52
1977	33.82
1978	35.38
1979	35.97
1980	36.81
1981	40.84
1982	42.33
1983	41.66
1984	37.26
1985	39.53
1986	42.55
1987	41.01
1988	47.89
1989	47.31
1990	47.29
1991	69.01
1992	62.78
1993	65.13
1994	68.88
1995	68.55
1996	70.9
1997	71.71
1998	76.69
1999	81.86
2000	77.66
2001	83.35
2002	82.3
2003	95.02
2004	93.15
2005	102.28
2006	104.58
2007	116.85
2008	129.34
2009	139.6
2010	132.25
2011	146.54
2012	151.23
2013	149.86
2014	151.59
2015	159.53
2016	175.83