Year	Index (Units)
1980	5.802
1981	6.435
1982	7.165
1983	8.198
1984	8.326
1985	8.900
1986	10.832
1987	11.821
1988	12.881
1989	14.199
1990	14.989
1991	17.257
1992	20.588
1993	21.795
1994	23.774
1995	25.842
1996	27.390
1997	28.944
1998	32.421
1999	35.344
2000	35.555
2001	36.766
2002	38.057
2003	40.375
2004	41.191
2005	43.930
2006	47.564
2007	49.815
2008	55.143
2009	61.257
2010	66.786
2011	73.185
2012	81.583
2013	87.905
2014	95.011
2015	102.210
2016	112.880
2017	115.940
2018	121.250
2019	128.550
2020	134.690
2021	140.330
2022	151.670
2023	162.950
2024	172.282
2025	181.758
2026	191.572
2027	201.917
2028	212.821
2029	224.313