Year	Index (Units)
1980	6.178
1981	6.888
1982	7.517
1983	7.979
1984	8.817
1985	10.327
1986	11.421
1987	12.104
1988	14.912
1989	16.041
1990	17.710
1991	19.287
1992	21.413
1993	24.989
1994	28.719
1995	33.361
1996	36.037
1997	40.093
1998	43.069
1999	45.382
2000	49.893
2001	54.355
2002	59.200
2003	62.755
2004	65.185
2005	69.459
2006	72.266
2007	75.890
2008	83.801
2009	91.989
2010	94.930
2011	100.000
2012	108.748
2013	115.853
2014	124.133
2015	131.016
2016	140.504
2017	143.986
2018	148.060
2019	151.596
2020	155.476
2021	153.584
2022	167.091
2023	182.162
2024	191.443
2025	198.392
2026	205.161
2027	212.075
2028	219.376
2029	225.435