Year	Index (Units)
1980	25.384
1981	25.706
1982	27.400
1983	29.345
1984	29.757
1985	31.923
1986	33.250
1987	35.914
1988	37.612
1989	36.493
1990	38.930
1991	41.263
1992	43.848
1993	46.806
1994	47.200
1995	47.699
1996	49.080
1997	50.878
1998	54.688
1999	58.466
2000	55.738
2001	57.668
2002	59.582
2003	64.401
2004	65.780
2005	71.689
2006	74.325
2007	76.559
2008	77.622
2009	78.713
2010	82.006
2011	89.712
2012	92.921
2013	96.286
2014	100.000
2015	102.531
2016	105.231
2017	107.018
2018	108.544
2019	110.223
2020	108.589
2021	105.860
2022	108.477
2023	113.271
2024	117.975
2025	121.750
2026	125.524
2027	129.290
2028	133.039
2029	136.764