Year	Index
1980	8.567
1981	9.389
1982	10.854
1983	12.67
1984	15.151
1985	16.879
1986	21.597
1987	27.02
1988	29.72
1989	34.669
1990	42.081
1991	50.796
1992	55.745
1993	64.081
1994	68.177
1995	74.808
1996	80.909
1997	84.761
1998	87.624
1999	90.145
2000	92.437
2001	94.5
2002	97.097
2003	100.993
2004	112.818
2005	118.157
2006	126.735
2007	137.597
2008	164.998
2009	181.384
2010	200.575
2011	224.207
2012	240.478
2013	263.934
2014	285.578
2015	318.1
2016	362.535
2017	470.438
2018	538.105
2019	606.731
2020	671.942
2021	723.755
2022	776.157
2023	829.943
2024	888.31