Year	Index
1980	35.817
1981	38.16
1982	43.282
1983	44.472
1984	47.805
1985	48.281
1986	46.575
1987	47.964
1988	48.995
1989	49.788
1990	49.114
1991	48.678
1992	48.598
1993	49.909
1994	64.427
1995	66.966
1996	71.608
1997	74.6
1998	75.325
1999	75.821
2000	77.647
2001	78.405
2002	81.49
2003	84.069
2004	84.651
2005	88.436
2006	89.788
2007	91.823
2008	102.455
2009	100.565
2010	100.303
2011	105.378
2012	107.142
2013	107.271
2014	107.111
2015	108.476
2016	106.703
2017	108.915
2018	111.093
2019	113.315
2020	115.582
2021	117.893
2022	120.251
2023	122.656
2024	125.109