Year	Index (Units)
1980	5.742
1981	6.701
1982	9.264
1983	14.828
1984	23.654
1985	43.522
1986	35.845
1987	31.123
1988	31.908
1989	33.843
1990	34.155
1991	32.985
1992	31.574
1993	33.295
1994	43.897
1995	52.620
1996	55.009
1997	56.669
1998	61.166
1999	61.394
2000	64.363
2001	69.988
2002	75.294
2003	80.808
2004	84.232
2005	88.981
2006	92.954
2007	95.555
2008	100.000
2009	105.737
2010	111.362
2011	116.706
2012	120.724
2013	124.561
2014	129.913
2015	132.114
2016	133.961
2017	134.960
2018	136.776
2019	138.478
2020	145.078
2021	144.942
2022	151.999
2023	155.797
2024	162.653
2025	165.521
2026	169.753
2027	173.522
2028	177.022
2029	179.759