Year	Index
1981	24.7
1982	27.3
1983	30.2
1984	31.8
1985	32.8
1986	34.2
1987	36.8
1988	39.8
1989	43.8
1990	48.8
1991	53.6
1992	58.8
1993	64.1
1994	70.2
1995	75.1
1996	80.1
1997	84.3
1998	82.9
1999	79.5
2000	77.9
2001	75.1
2002	74
2003	72.6
2004	72.9
2005	73.8
2006	75.5
2007	78.4
2008	80
2009	81.3
2010	83.6
2011	88.4
2012	91.7
2013	95.6
2014	100.3
2015	103.304
2016	105.795
2017	107.362
2018	109.947
2019	112.585
2020	115.4
2021	118.169
2022	121.124
2023	124.152
2024	127.256