Year	Index
1980	70.697
1981	73.234
1982	74.601
1983	75.03
1984	74.523
1985	72.802
1986	70.529
1987	68.841
1988	68.6
1989	69.4
1990	68.7
1991	71.3
1992	70.6
1993	71.5
1994	72.4
1995	76.2
1996	76.4
1997	76.2
1998	75.9
1999	74.3
2000	73.5
2001	72.6
2002	72.7
2003	73.1
2004	73.3
2005	73.7
2006	75.1
2007	78.9
2008	83.7
2009	87.2
2010	90.5
2011	93.9
2012	96.6
2013	100
2014	102.2
2015	103.5
2016	105.6
2017	104.7
2018	107.3
2019	106.549
2020	108.935
2021	111.275
2022	113.62
2023	115.954
2024	118.337