Year	Index
1980	56.925
1981	60.666
1982	63.956
1983	65.296
1984	67.178
1985	69.319
1986	69.332
1987	70.625
1988	72.016
1989	75.646
1990	79.673
1991	83.861
1992	86.757
1993	88.913
1994	89.283
1995	90.992
1996	91.676
1997	91.995
1998	91.817
1999	93.326
2000	94.715
2001	95.029
2002	95.866
2003	96.403
2004	97.646
2005	98.598
2006	99.218
2007	101.225
2008	101.952
2009	102.253
2010	102.801
2011	102.201
2012	101.757
2013	101.84
2014	101.526
2015	100.225
2016	100.24
2017	101.102
2018	102.557
2019	102.736
2020	104.015
2021	104.926
2022	106.022
2023	107.082
2024	108.153