Year	Index
1983	0.002
1984	0.023
1985	2.774
1986	10.357
1987	11.867
1988	13.766
1989	15.855
1990	18.569
1991	22.551
1992	25.473
1993	27.645
1994	29.822
1995	32.861
1996	36.946
1997	38.685
1998	41.654
1999	42.554
2000	44.512
2001	45.223
2002	45.64
2003	47.163
2004	49.256
2005	51.916
2006	54.148
2007	57.752
2008	65.842
2009	68.046
2010	69.748
2011	76.641
2012	80.105
2013	84.699
2014	89.581
2015	93.219
2016	96.599
2017	99.323
2018	101.632
2019	103.972
2020	107.707
2021	111.983
2022	116.786
2023	122.014
2024	128.115