Year	Index
1980	0.018
1981	0.022
1982	0.028
1983	0.047
1984	0.079
1985	0.139
1986	0.251
1987	0.7
1988	0.94
1989	1.512
1990	3.189
1991	6.464
1992	10.697
1993	13.073
1994	16.236
1995	20.455
1996	25.188
1997	28.855
1998	39.239
1999	52.616
2000	52.133
2001	53.472
2002	53.536
2003	55.673
2004	62.867
2005	71.481
2006	79.01
2007	92.418
2008	100
2009	107.469
2010	115.2
2011	123.02
2012	131.125
2013	138.361
2014	144.788
2015	154.48
2016	171.293
2017	202.502
2018	236.654
2019	273.953
2020	309.567
2021	343.929
2022	376.946
2023	409.929
2024	443.748