Year	Index
1980	7.565
1981	8.8
1982	9.512
1983	10.761
1984	16.23
1985	17.148
1986	17.09
1987	18.294
1988	20.044
1989	23.101
1990	27.3
1991	30.9
1992	33.3
1993	35.6
1994	38.6
1995	41.8
1996	44.6
1997	47.4
1998	52.2
1999	54.3
2000	57.7
2001	60.3
2002	61.9
2003	64.3
2004	69.7
2005	74.4
2006	77.7
2007	80.7
2008	87.2
2009	91
2010	94.3
2011	98.2
2012	100.9
2013	104.7
2014	106.7
2015	107.5
2016	109.9
2017	113.1
2018	118.9
2019	123.062
2020	126.876
2021	130.683
2022	134.603
2023	138.641
2024	142.801