Year	Index (Units)
1980	0.172
1981	0.231
1982	0.393
1983	0.638
1984	0.812
1985	1.743
1986	2.353
1987	2.496
1988	2.866
1989	4.577
1990	3.372
1991	3.826
1992	4.202
1993	4.440
1994	4.780
1995	5.692
1996	6.782
1997	8.107
1998	15.416
1999	35.211
2000	38.157
2001	41.137
2002	45.511
2003	52.560
2004	58.062
2005	62.224
2006	66.297
2007	69.387
2008	74.681
2009	74.786
2010	79.260
2011	85.259
2012	88.887
2013	94.551
2014	98.455
2015	99.713
2016	101.305
2017	102.141
2018	104.225
2019	107.688
2020	113.185
2021	117.433
2022	144.395
2023	189.489
2024	230.229
2025	264.188
2026	282.681
2027	291.162
2028	299.897
2029	308.894