Year	Index
1980	39.996
1981	42.934
1982	43.675
1983	45.067
1984	46.479
1985	47.539
1986	50.271
1987	52.117
1988	54.165
1989	55.316
1990	58.84
1991	57.638
1992	60.329
1993	62.156
1994	63.806
1995	62.484
1996	58.685
1997	59.198
1998	65.361
1999	66.706
2000	67.541
2001	71.699
2002	74.29
2003	78.708
2004	98.128
2005	98.578
2006	100
2007	111.811
2008	150.889
2009	192.381
2010	184.294
2011	188.39
2012	209.231
2013	217.677
2014	222.606
2015	227.314
2016	225.516
2017	230.308
2018	238.188
2019	246.147
2020	253.925
2021	260.735
2022	267.507
2023	275.534
2024	283.803