Year	Index
1980	0.008
1981	0.009
1982	0.01
1983	0.011
1984	0.013
1985	0.019
1986	0.035
1987	0.051
1988	0.073
1989	0.136
1990	0.282
1991	0.547
1992	1.398
1993	3.64
1994	6.346
1995	8.288
1996	10.306
1997	12.924
1998	15.109
1999	17.817
2000	23.628
2001	29.614
2002	35.356
2003	41.582
2004	49.78
2005	58.069
2006	66.513
2007	75.14
2008	83.135
2009	87.757
2010	100
2011	111.112
2012	118.881
2013	130.449
2014	137.54
2015	146.701
2016	166.614
2017	183.626
2018	202.54
2019	221.327
2020	246.41
2021	270.967
2022	297.127
2023	325.413
2024	356.166