Year	Index
1980	55.851
1981	57.886
1982	60.706
1983	65.258
1984	66.321
1985	66.857
1986	67.084
1987	68.619
1988	68.487
1989	67.613
1990	67.995
1991	68.331
1992	71.789
1993	74.341
1994	77.077
1995	77.436
1996	85.037
1997	86.297
1998	87.165
1999	87.932
2000	86.815
2001	87.723
2002	89.173
2003	90.164
2004	91.948
2005	93.564
2006	95.524
2007	100
2008	107.527
2009	114.486
2010	117.451
2011	124.315
2012	131.992
2013	139.258
2014	145.104
2015	148.701
2016	151.789
2017	154.878
2018	156.058
2019	158.399
2020	161.567
2021	164.842
2022	168.152
2023	171.525
2024	174.955