Year	Percent
1970	100.33389
1971	100.65574
1972	101.12721
1973	101.4218
1974	101.70807
1975	101.98171
1976	102.3988
1977	102.65096
1978	103.04348
1979	103.27635
1980	103.64656
1981	103.8674
1982	104.07609
1983	104.41767
1984	104.61741
1985	104.94148
1986	105.12821
1987	105.30973
1988	105.61798
1989	105.78818
1990	106.08273
1991	106.25
1992	106.4133
1993	106.698
1994	106.8525
1995	107.01149
1996	107.281
1997	107.42407
1998	107.56396
1999	107.81078
2000	108.05223
2001	108.17204
2002	108.39532
2003	108.5084
2004	108.60996
2005	108.82051
2006	109.01722
2007	109.10911
2008	109.30693
2009	109.38416
2010	109.56522
2011	109.64661
2012	109.71698
2013	109.88806
2014	109.95392
2015	110.01821