Year	Index (Units)
1980	52.477
1981	55.311
1982	58.298
1983	59.521
1984	60.356
1985	61.442
1986	61.503
1987	61.311
1988	61.170
1989	62.003
1990	62.963
1991	64.927
1992	66.543
1993	67.600
1994	69.003
1995	70.189
1996	70.922
1997	72.797
1998	74.309
1999	75.264
2000	77.835
2001	81.092
2002	84.150
2003	85.974
2004	87.011
2005	88.745
2006	91.017
2007	92.904
2008	95.045
2009	95.256
2010	96.153
2011	96.340
2012	97.735
2013	98.982
2014	99.232
2015	100.000
2016	100.455
2017	101.721
2018	104.200
2019	107.360
2020	109.429
2021	112.629
2022	118.866
2023	127.960
2024	130.435
2025	133.329
2026	136.037
2027	138.796
2028	141.669
2029	144.580