Year	2004-2006 = 100
1961	24.73
1962	29.87
1963	31.63
1964	30.92
1965	30.54
1966	32.71
1967	36.26
1968	28.56
1969	34.02
1970	29.04
1971	32.08
1972	31.65
1973	19.32
1974	27.29
1975	23.95
1976	32.19
1977	33.52
1978	36.68
1979	39.28
1980	40.64
1981	38.96
1982	38.45
1983	38.14
1984	25.22
1985	35.03
1986	40.04
1987	31.69
1988	46.94
1989	40.82
1990	44.68
1991	51.11
1992	53.62
1993	46.81
1994	49.79
1995	51.51
1996	55.82
1997	47.84
1998	81.17
1999	75.94
2000	60.86
2001	81.33
2002	96.75
2003	96.91
2004	82.1
2005	103.85
2006	114.05
2007	120.87
2008	161.46
2009	121.56
2010	181.42
2011	154.96
2012	175.78
2013	185.14
2014	196.77
2015	213.59
2016	235.71