Year	Index
1980	36.373
1981	40.612
1982	44.295
1983	47.927
1984	51.981
1985	54.698
1986	57.316
1987	59.767
1988	64.355
1989	68.561
1990	72.125
1991	73.25
1992	73.931
1993	75.264
1994	76.651
1995	79.868
1996	79.789
1997	81.478
1998	84.014
1999	84.81
2000	86.193
2001	89.065
2002	89.929
2003	90.121
2004	90.669
2005	91.506
2006	92.342
2007	94.894
2008	97.814
2009	99.65
2010	100
2011	102.584
2012	105.614
2013	108.309
2014	110.143
2015	112.205
2016	112.892
2017	113.774
2018	115.613
2019	117.357
2020	119.327
2021	121.532
2022	123.69
2023	126.201
2024	128.763