Year	Index (Units)
1980	73.144
1981	76.755
1982	78.865
1983	80.348
1984	82.157
1985	83.831
1986	84.340
1987	84.448
1988	85.001
1989	86.950
1990	89.620
1991	92.553
1992	94.151
1993	95.332
1994	95.990
1995	95.905
1996	96.038
1997	97.670
1998	98.307
1999	97.966
2000	97.293
2001	96.618
2002	95.751
2003	95.499
2004	95.489
2005	95.214
2006	95.458
2007	95.502
2008	96.823
2009	95.534
2010	94.825
2011	94.562
2012	94.516
2013	94.829
2014	97.445
2015	98.223
2016	98.102
2017	98.579
2018	99.554
2019	100.020
2020	99.993
2021	99.759
2022	102.250
2023	105.591
2024	107.954
2025	110.217
2026	112.428
2027	114.681
2028	116.980
2029	119.324