Year	Index (Units)
1980	0.014
1981	0.018
1982	0.021
1983	0.031
1984	0.048
1985	0.085
1986	0.147
1987	0.259
1988	0.422
1989	0.741
1990	1.661
1991	3.335
1992	5.323
1993	7.871
1994	10.937
1995	15.427
1996	19.504
1997	23.166
1998	26.035
1999	27.161
2000	28.122
2001	29.480
2002	33.199
2003	38.691
2004	42.600
2005	42.889
2006	45.691
2007	49.994
2008	54.006
2009	58.190
2010	61.045
2011	66.545
2012	72.240
2013	78.130
2014	85.453
2015	93.157
2016	100.000
2017	105.680
2018	113.633
2019	123.015
2020	136.518
2021	151.782
2022	158.224
2023	163.653
2024	172.896
2025	181.965
2026	191.340
2027	200.874
2028	210.783
2029	221.298