Year	Index (Units)
1980	0.005
1981	0.006
1982	0.008
1983	0.013
1984	0.021
1985	0.038
1986	0.069
1987	0.191
1988	0.257
1989	0.413
1990	0.871
1991	1.764
1992	2.920
1993	3.569
1994	4.432
1995	5.584
1996	6.876
1997	7.877
1998	10.711
1999	14.363
2000	14.231
2001	14.597
2002	14.614
2003	15.198
2004	17.161
2005	19.513
2006	21.568
2007	25.230
2008	27.302
2009	29.341
2010	31.449
2011	33.585
2012	35.798
2013	37.775
2014	39.528
2015	42.172
2016	46.763
2017	55.283
2018	64.145
2019	73.642
2020	83.544
2021	93.464
2022	118.895
2023	175.626
2024	244.327
2025	297.444
2026	342.506
2027	381.381
2028	415.324
2029	446.473