Year	Percent
1960	104.50432
1961	96.51453
1962	93.757
1963	95.54409
1964	106.22847
1965	110.71879
1966	103.46517
1967	105.49962
1968	98.0485
1969	103.02292
1970	105.05523
1971	105.19195
1972	109.89256
1973	110.11628
1974	135.49946
1975	113.82667
1976	112.72423
1977	110.37644
1978	105.30469
1979	109.21877
1980	128.06642
1981	117.87863
1982	103.04322
1983	94.95247
1984	81.2359
1985	71.91526
1986	74.29854
1987	61.23386
1988	65.46645
1989	181.3758
1990	243.111
1991	193.62034
1992	230.59812
1993	198.46354
1994	144.01499
1995	153.03242
1996	108.52503
1997	146.19073
1998	104.55026
1999	93.51239
2000	103.68044
2001	113.16817
2002	89.11333
2003	105.56987
2004	108.91996
2005	114.11404
2006	83.30857
2007	81.83815
2008	86.25414
2009	72.04237
2010	78.35978
2011	92.81866
2012	94.14257
2013	89.19775
2014	79.33434
2015	76.25471
2016	81.90823
2017	101.07132