Year	Index (Units)
1980	0.156
1981	0.197
1982	0.196
1983	0.197
1984	0.228
1985	0.223
1986	0.287
1987	0.415
1988	0.553
1989	0.771
1990	1.097
1991	1.375
1992	1.919
1993	3.365
1994	5.862
1995	8.797
1996	17.526
1997	24.381
1998	28.282
1999	30.518
2000	33.562
2001	33.899
2002	37.945
2003	43.811
2004	48.881
2005	58.288
2006	67.101
2007	76.652
2008	100.000
2009	113.953
2010	121.891
2011	136.128
2012	144.933
2013	155.372
2014	162.554
2015	169.875
2016	181.857
2017	189.278
2018	206.161
2019	229.384
2020	250.644
2021	263.588
2022	306.562
2023	358.835
2024	395.450
2025	415.584
2026	436.917
2027	458.921
2028	481.368
2029	504.656