Year	Index
1980	6.766
1981	8.319
1982	9.872
1983	11.869
1984	13.976
1985	17.526
1986	20.521
1987	23.737
1988	27.065
1989	31.169
1990	38.268
1991	45.034
1992	51.579
1993	57.79
1994	64.002
1995	68.962
1996	73.755
1997	77.106
1998	79.956
1999	81.805
2000	84.807
2001	87.797
2002	90.868
2003	93.683
2004	96.615
2005	100
2006	103.199
2007	107.178
2008	109.528
2009	112.32
2010	118.113
2011	120.684
2012	121.068
2013	118.869
2014	115.856
2015	116.31
2016	116.647
2017	117.776
2018	118.52
2019	119.456
2020	121.415
2021	123.329
2022	125.455
2023	127.684
2024	129.953