Year	Index
1980	1.865
1981	2
1982	2.15
1983	2.292
1984	2.846
1985	3.938
1986	4.308
1987	4.929
1988	7.075
1989	8.745
1990	13.158
1991	20.823
1992	21.982
1993	23.078
1994	25.417
1995	27.87
1996	28.893
1997	31.624
1998	33.681
1999	34.972
2000	37.493
2001	39.758
2002	42.509
2003	56.734
2004	82.358
2005	87.119
2006	92.905
2007	100
2008	110.392
2009	114.253
2010	120.473
2011	130.184
2012	136.821
2013	143.241
2014	146.173
2015	147.11
2016	148.392
2017	153.842
2018	159.326
2019	163.88
2020	170.683
2021	177.46
2022	184.505
2023	191.831
2024	199.447