Year	Index
1980	20.269
1981	24.223
1982	28.22
1983	32.361
1984	35.832
1985	39.143
1986	41.433
1987	43.377
1988	45.59
1989	48.445
1990	52.955
1991	55.969
1992	58.573
1993	61.176
1994	63.642
1995	67.273
1996	69.2
1997	70.4
1998	71.6
1999	73.1
2000	75.1
2001	76.8
2002	79.1
2003	81.1
2004	83
2005	84.7
2006	86.5
2007	88.9
2008	91
2009	92
2010	93.9
2011	97.4
2012	99.9
2013	100.5
2014	100.5
2015	100.6
2016	101.1
2017	102.1
2018	103.3
2019	104.083
2020	105.323
2021	106.634
2022	108.172
2023	109.838
2024	111.617