Year	Index
1980	55.14
1981	58.241
1982	62.49
1983	64.049
1984	66.409
1985	67.952
1986	69.991
1987	71.513
1988	73.54
1989	76.065
1990	79.579
1991	83.844
1992	85.631
1993	87.636
1994	88.692
1995	89.325
1996	89.484
1997	89.1
1998	88.963
1999	89.052
2000	90.434
2001	91.349
2002	91.112
2003	92.137
2004	92.396
2005	93.125
2006	95.052
2007	97.369
2008	99.219
2009	99.704
2010	100
2011	100.339
2012	100.128
2013	100.183
2014	99.531
2015	98.913
2016	98.307
2017	97.881
2018	98.258
2019	98.827
2020	99.875
2021	100.867
2022	102.039
2023	103.117
2024	104.199