Year	Index (Units)
1988	0.002
1989	0.068
1990	3.513
1991	16.955
1992	28.562
1993	42.000
1994	52.034
1995	59.105
1996	65.076
1997	69.967
1998	74.034
1999	76.150
2000	79.143
2001	80.050
2002	80.477
2003	82.907
2004	87.555
2005	89.298
2006	97.188
2007	100.000
2008	101.702
2009	104.018
2010	110.167
2011	115.889
2012	118.099
2013	119.946
2014	123.261
2015	126.871
2016	131.663
2017	136.811
2018	139.482
2019	141.889
2020	147.945
2021	158.864
2022	165.573
2023	177.527
2024	181.610
2025	185.433
2026	189.401
2027	193.349
2028	197.262
2029	201.145