Year	Index
1980	4.252
1981	4.557
1982	5.024
1983	5.641
1984	5.871
1985	6.373
1986	6.735
1987	9.241
1988	10.628
1989	12.866
1990	15.729
1991	17.827
1992	22.233
1993	24.399
1994	26.09
1995	29.108
1996	31.21
1997	33.036
1998	34.326
1999	34.623
2000	36.326
2001	37.008
2002	37.886
2003	40.453
2004	45.174
2005	47.981
2006	51.512
2007	58.001
2008	65.079
2009	72.358
2010	79.672
2011	88.964
2012	101.093
2013	108.713
2014	120.94
2015	132.951
2016	141.254
2017	173.648
2018	210.854
2019	241.33
2020	270.674
2021	292.585
2022	313.725
2023	335.696
2024	359.206