Year	Index
1980	52.379
1981	55.207
1982	58.188
1983	59.409
1984	60.242
1985	61.327
1986	61.387
1987	61.195
1988	61.055
1989	61.887
1990	62.845
1991	64.805
1992	66.417
1993	67.474
1994	68.873
1995	70.189
1996	70.922
1997	72.797
1998	74.309
1999	75.264
2000	77.835
2001	81.092
2002	84.15
2003	85.974
2004	87.011
2005	88.745
2006	91.017
2007	92.904
2008	95.045
2009	95.256
2010	96.153
2011	96.34
2012	97.735
2013	98.982
2014	99.232
2015	100
2016	100.455
2017	101.611
2018	103.891
2019	105.554
2020	107.289
2021	109.214
2022	111.26
2023	113.506
2024	115.908