Year	Index (Units)
1980	0.633
1981	0.663
1982	0.709
1983	0.827
1984	1.085
1985	1.336
1986	1.479
1987	1.603
1988	1.740
1989	2.039
1990	2.647
1991	4.770
1992	6.687
1993	8.702
1994	11.033
1995	13.854
1996	16.047
1997	17.518
1998	18.893
1999	20.175
2000	21.376
2001	23.203
2002	24.879
2003	28.322
2004	32.204
2005	36.250
2006	38.300
2007	44.741
2008	52.277
2009	57.618
2010	64.384
2011	68.252
2012	73.714
2013	80.697
2014	85.827
2015	88.969
2016	90.503
2017	95.241
2018	97.565
2019	103.632
2020	109.000
2021	116.980
2022	127.930
2023	136.757
2024	144.279
2025	151.493
2026	159.128
2027	167.084
2028	175.439
2029	184.211