Year	Index (Units)
1980	0.005
1981	0.007
1982	0.010
1983	0.017
1984	0.027
1985	0.046
1986	0.101
1987	0.218
1988	0.302
1989	0.560
1990	1.109
1991	2.389
1992	3.221
1993	4.081
1994	4.804
1995	6.463
1996	6.875
1997	11.476
1998	10.825
1999	14.802
2000	14.351
2001	14.843
2002	14.386
2003	16.009
2004	18.313
2005	20.712
2006	22.424
2007	25.510
2008	27.880
2009	29.980
2010	32.200
2011	34.340
2012	36.470
2013	38.430
2014	40.200
2015	43.570
2016	51.160
2017	59.000
2018	67.400
2019	76.770
2020	84.790
2021	100.000
2022	137.090
2023	208.590
2024	262.991
2025	308.751
2026	348.580
2027	382.741
2028	413.360
2029	442.295