Year	Index
1980	8.964
1981	9.732
1982	10.211
1983	10.434
1984	10.618
1985	11.149
1986	12.163
1987	13.62
1988	14.28
1989	15.177
1990	19.186
1991	21.896
1992	24.711
1993	27.504
1994	29.871
1995	34.444
1996	35.729
1997	40.049
1998	38.766
1999	39.44
2000	39.886
2001	40.144
2002	40.84
2003	41.373
2004	45.537
2005	49.86
2006	53.67
2007	58.873
2008	65.36
2009	72.269
2010	74.471
2011	83.985
2012	89.791
2013	95.564
2014	100
2015	107.93
2016	108.069
2017	111.557
2018	113.788
2019	116.063
2020	118.849
2021	121.82
2022	124.915
2023	127.843
2024	130.419