Year	Index
1980	5.802
1981	6.435
1982	7.165
1983	8.198
1984	8.326
1985	8.9
1986	10.832
1987	11.821
1988	12.881
1989	14.199
1990	14.989
1991	17.257
1992	20.588
1993	21.795
1994	23.774
1995	25.842
1996	27.39
1997	28.944
1998	32.421
1999	35.344
2000	35.555
2001	36.766
2002	38.057
2003	40.375
2004	41.191
2005	43.93
2006	47.564
2007	49.815
2008	55.143
2009	61.257
2010	66.786
2011	73.185
2012	81.583
2013	87.905
2014	95.011
2015	102.21
2016	112.88
2017	115.94
2018	121.3
2019	127.445
2020	135.729
2021	144.145
2022	152.361
2023	160.741
2024	169.26