Year	Index (Units)
1980	0.007
1981	0.009
1982	0.011
1983	0.017
1984	0.026
1985	0.044
1986	0.078
1987	0.128
1988	0.207
1989	0.374
1990	0.796
1991	1.607
1992	2.707
1993	4.172
1994	6.038
1995	8.589
1996	11.023
1997	13.208
1998	14.635
1999	15.463
2000	16.202
2001	16.908
2002	19.269
2003	23.003
2004	25.113
2005	26.293
2006	27.972
2007	30.242
2008	32.624
2009	34.930
2010	37.268
2011	40.284
2012	43.547
2013	47.282
2014	51.479
2015	55.938
2016	61.330
2017	65.146
2018	70.101
2019	75.627
2020	83.003
2021	89.436
2022	97.580
2023	103.305
2024	109.261
2025	115.280
2026	121.307
2027	127.226
2028	133.066
2029	139.142