Year	Index
1986	1.379
1987	0.948
1988	1.166
1989	1.911
1990	4.62
1991	13.444
1992	23.526
1993	50.421
1994	55.685
1995	61.297
1996	65.678
1997	72.576
1998	81.937
1999	83.573
2000	82.883
2001	82.786
2002	82.756
2003	83.606
2004	86.887
2005	92.404
2006	98.08
2007	105.601
2008	131.999
2009	131.124
2010	136.365
2011	143.835
2012	148.042
2013	152.417
2014	158.288
2015	160.227
2016	165.073
2017	169.87
2018	173.925
2019	178.346
2020	183.398
2021	188.837
2022	194.502
2023	200.337
2024	206.347