Year	Index
1980	36.3
1981	40.8
1982	44.4
1983	47.1
1984	49.8
1985	51.5
1986	53.8
1987	55.9
1988	58.5
1989	61.3
1990	64.9
1991	66.3
1992	67.1
1993	67.9
1994	69.5
1995	70.7
1996	72.3
1997	73.4
1998	74.3
1999	76.6
2000	78.4
2001	80
2002	82.1
2003	83.1
2004	83.9
2005	85.8
2006	87.2
2007	89.4
2008	91.6
2009	92.7
2010	95.3
2011	97.6
2012	99.3
2013	99.8
2014	99.8
2015	100.1
2016	100.4
2017	101.3
2018	102
2019	103.173
2020	104.617
2021	106.396
2022	108.417
2023	110.586
2024	112.798