Year	Index (Units)
1980	6.882
1981	7.429
1982	7.799
1983	9.378
1984	10.113
1985	11.407
1986	13.049
1987	14.705
1988	16.443
1989	18.294
1990	20.255
1991	22.796
1992	27.010
1993	29.921
1994	31.361
1995	33.337
1996	35.942
1997	38.481
1998	40.090
1999	43.624
2000	45.611
2001	46.797
2002	48.638
2003	50.132
2004	52.220
2005	55.416
2006	59.495
2007	64.018
2008	67.616
2009	78.373
2010	90.244
2011	100.000
2012	107.741
2013	115.372
2014	124.643
2015	130.138
2016	139.444
2017	150.964
2018	157.539
2019	164.930
2020	170.236
2021	181.749
2022	195.066
2023	210.311
2024	223.586
2025	236.137
2026	249.007
2027	262.453
2028	276.625
2029	291.563