Year	Index (Units)
1980	0.044
1981	0.095
1982	0.209
1983	0.513
1984	2.429
1985	9.828
1986	14.560
1987	17.451
1988	20.283
1989	24.391
1990	28.579
1991	34.011
1992	38.075
1993	42.241
1994	47.455
1995	52.221
1996	58.110
1997	63.340
1998	66.783
1999	70.252
2000	71.042
2001	71.835
2002	75.920
2003	76.429
2004	76.112
2005	77.124
2006	78.749
2007	79.156
2008	82.792
2009	85.538
2010	87.842
2011	90.873
2012	92.425
2013	93.835
2014	94.282
2015	93.685
2016	93.175
2017	93.401
2018	94.154
2019	94.947
2020	94.389
2021	95.798
2022	100.008
2023	104.217
2024	106.768
2025	109.487
2026	111.809
2027	114.148
2028	116.477
2029	118.804