Year	Index
1988	0.002
1989	0.003
1990	0.005
1991	0.204
1992	0.366
1993	0.599
1994	1.33
1995	1.768
1996	7.263
1997	47.15
1998	47.92
1999	51.26
2000	57.03
2001	59.78
2002	62.06
2003	65.56
2004	68.16
2005	73.2
2006	77.66
2007	86.64
2008	92.87
2009	94.39
2010	98.59
2011	100.6
2012	103.38
2013	102.5
2014	100.5
2015	99.6
2016	99.1
2017	100.88
2018	103.21
2019	105.481
2020	107.907
2021	110.389
2022	112.927
2023	115.525
2024	118.182