Year	Index
1980	5.101
1981	6.203
1982	7.891
1983	9.518
1984	11.605
1985	13.812
1986	16.421
1987	18.925
1988	22.081
1989	25.283
1990	30.514
1991	36.552
1992	41.962
1993	48.016
1994	53.386
1995	58.613
1996	63.088
1997	67.223
1998	70.654
1999	73.214
2000	74.379
2001	76.964
2002	79.542
2003	82.288
2004	84.809
2005	86.709
2006	89.74
2007	92.811
2008	96.843
2009	99.332
2010	100
2011	100.798
2012	100.425
2013	98.063
2014	96.266
2015	95.932
2016	95.698
2017	96.272
2018	97.036
2019	98.049
2020	99.373
2021	101.039
2022	102.712
2023	104.516
2024	106.352