Year	Index
1980	0.172
1981	0.231
1982	0.393
1983	0.638
1984	0.812
1985	1.743
1986	2.353
1987	2.496
1988	2.866
1989	4.577
1990	3.372
1991	3.826
1992	4.202
1993	4.44
1994	4.78
1995	5.692
1996	6.782
1997	8.107
1998	15.416
1999	35.211
2000	38.157
2001	41.137
2002	45.511
2003	52.56
2004	58.062
2005	62.224
2006	66.297
2007	69.452
2008	74.75
2009	74.775
2010	79.25
2011	85.258
2012	88.888
2013	94.551
2014	98.455
2015	99.713
2016	101.471
2017	102.141
2018	104.224
2019	107.455
2020	111.001
2021	114.442
2022	117.99
2023	121.647
2024	125.418