Year	Index
1980	47.892
1981	51.148
1982	54.166
1983	55.737
1984	57.632
1985	58.957
1986	58.957
1987	58.368
1988	58.66
1989	59.305
1990	60.788
1991	62.719
1992	64.498
1993	65.558
1994	66.948
1995	67.849
1996	68.832
1997	70.109
1998	71.36
1999	72.813
2000	74.523
2001	78.333
2002	81.35
2003	83.162
2004	84.312
2005	85.569
2006	86.983
2007	88.363
2008	90.319
2009	91.197
2010	92.045
2011	94.318
2012	96.977
2013	99.455
2014	99.774
2015	99.993
2016	100.103
2017	101.403
2018	103.028
2019	105.4
2020	107.126
2021	108.988
2022	110.992
2023	113.143
2024	115.449