Year	Index
1980	10.66
1981	12.798
1982	14.182
1983	15.822
1984	17.869
1985	21.526
1986	24.483
1987	27.758
1988	33.419
1989	35.941
1990	40.647
1991	44.278
1992	47.625
1993	53.351
1994	60.697
1995	68.156
1996	72.535
1997	77.703
1998	84.005
1999	89.12
2000	100
2001	105.942
2002	118.676
2003	127.328
2004	131.714
2005	138.166
2006	145.351
2007	157.089
2008	176.973
2009	190.154
2010	198.729
2011	210.866
2012	229.717
2013	242.629
2014	256.411
2015	269.109
2016	290.227
2017	308.283
2018	323.158
2019	341.339
2020	360.181
2021	379.892
2022	400.682
2023	422.865
2024	446.171