Year	Index
1980	6.259
1981	7.161
1982	7.296
1983	7.792
1984	8.333
1985	8.719
1986	8.886
1987	9.435
1988	10.694
1989	12.386
1990	16.141
1991	25.406
1992	31.171
1993	35.248
1994	44.468
1995	57.721
1996	71.279
1997	76.269
1998	73.883
1999	82.157
2000	100.478
2001	100.002
2002	101.324
2003	109.764
2004	123.207
2005	143.076
2006	158.189
2007	168.35
2008	194.201
2009	172.47
2010	200.241
2011	236.926
2012	254.611
2013	254.373
2014	253.609
2015	237.237
2016	241.055
2017	252.228
2018	279.662
2019	282.422
2020	296.02
2021	317.52
2022	344.124
2023	380.511
2024	386.768