Year	Index (Units)
1980	56.488
1981	59.652
1982	64.035
1983	65.595
1984	68.056
1985	69.601
1986	71.732
1987	73.287
1988	75.322
1989	77.930
1990	81.518
1991	85.925
1992	87.759
1993	89.787
1994	90.859
1995	91.533
1996	91.784
1997	91.340
1998	91.177
1999	91.216
2000	92.452
2001	93.339
2002	93.126
2003	94.221
2004	94.505
2005	95.371
2006	97.410
2007	99.721
2008	101.196
2009	101.648
2010	101.970
2011	101.952
2012	102.014
2013	101.912
2014	101.275
2015	100.000
2016	99.391
2017	99.023
2018	99.791
2019	99.700
2020	98.961
2021	100.188
2022	102.742
2023	103.740
2024	105.336
2025	106.575
2026	107.838
2027	109.125
2028	110.442
2029	111.733