Year	Index (Units)
1980	29.665
1981	33.013
1982	38.266
1983	43.005
1984	47.176
1985	52.687
1986	54.850
1987	52.017
1988	50.936
1989	51.348
1990	50.881
1991	50.516
1992	50.266
1993	50.516
1994	69.479
1995	73.307
1996	75.135
1997	76.614
1998	77.310
1999	77.686
2000	78.747
2001	81.937
2002	83.166
2003	81.929
2004	83.329
2005	84.514
2006	87.818
2007	93.243
2008	98.417
2009	93.944
2010	97.978
2011	100.658
2012	101.799
2013	101.722
2014	100.900
2015	101.868
2016	104.780
2017	103.950
2018	105.110
2019	105.781
2020	108.355
2021	112.500
2022	126.900
2023	127.900
2024	139.442
2025	126.260
2026	164.457
2027	161.535
2028	161.530
2029	161.149