Year	Index
1980	48.865
1981	53.53
1982	52.889
1983	50.643
1984	50.453
1985	48.051
1986	37.417
1987	41.034
1988	47.865
1989	49.426
1990	50.718
1991	52.019
1992	50.735
1993	51.868
1994	53.818
1995	55.896
1996	56.293
1997	57.038
1998	52.003
1999	53.188
2000	59.405
2001	58.764
2002	59.366
2003	64.473
2004	71.56
2005	81.388
2006	88.586
2007	96.057
2008	106.978
2009	93.076
2010	100
2011	109.737
2012	113.045
2013	113.48
2014	111.583
2015	101.121
2016	101.264
2017	107.18
2018	113.746
2019	113.614
2020	116.292
2021	118.649
2022	120.52
2023	122.436
2024	124.548