Year	Index
1980	0.043
1981	0.044
1982	0.044
1983	0.044
1984	0.045
1985	0.045
1986	0.045
1987	0.046
1988	0.047
1989	0.049
1990	0.062
1991	0.207
1992	0.335
1993	0.564
1994	1.029
1995	1.752
1996	3.811
1997	38.69
1998	50.96
1999	54.57
2000	58.497
2001	62.07
2002	64.412
2003	65.875
2004	69.603
2005	74.136
2006	79.133
2007	87.91
2008	95.057
2009	98.905
2010	100
2011	105.979
2012	107.627
2013	106.87
2014	107.365
2015	109.733
2016	112.198
2017	116.016
2018	119.649
2019	123.137
2020	126.538
2021	130.081
2022	133.724
2023	137.468
2024	141.317