Year	Index
1980	19.831
1981	22.716
1982	25.991
1983	29.155
1984	32.443
1985	35.303
1986	38.408
1987	40.424
1988	42.379
1989	45.257
1990	48.299
1991	51.166
1992	54.821
1993	57.326
1994	60.031
1995	62.837
1996	65.098
1997	66.32
1998	67.489
1999	68.998
2000	71.402
2001	73.965
2002	76.261
2003	78.579
2004	80.967
2005	83.694
2006	86.636
2007	89.051
2008	92.68
2009	92.414
2010	94.077
2011	97.084
2012	99.458
2013	100.859
2014	100.707
2015	100.203
2016	100
2017	101.956
2018	103.664
2019	104.92
2020	106.625
2021	108.389
2022	110.49
2023	112.531
2024	114.713