Year	Index (Units)
1980	18.852
1981	21.280
1982	23.517
1983	25.154
1984	26.716
1985	28.105
1986	27.950
1987	29.969
1988	31.428
1989	33.191
1990	34.457
1991	35.219
1992	34.993
1993	35.796
1994	35.740
1995	36.834
1996	38.404
1997	39.474
1998	39.200
1999	41.796
2000	48.205
2001	49.031
2002	48.285
2003	49.667
2004	52.572
2005	57.179
2006	62.172
2007	64.086
2008	70.857
2009	67.232
2010	71.236
2011	75.990
2012	78.538
2013	80.543
2014	80.751
2015	78.486
2016	77.232
2017	80.384
2018	85.804
2019	85.333
2020	83.185
2021	100.000
2022	128.162
2023	114.561
2024	122.669
2025	128.280
2026	129.658
2027	130.842
2028	132.240
2029	134.081