Year	Index (Units)
1980	64.880
1981	71.815
1982	73.592
1983	75.562
1984	76.536
1985	76.553
1986	80.306
1987	80.339
1988	80.390
1989	82.465
1990	86.697
1991	89.721
1992	92.599
1993	95.822
1994	97.462
1995	99.772
1996	102.108
1997	104.359
1998	107.755
1999	105.681
2000	104.718
2001	104.056
2002	103.635
2003	102.176
2004	101.413
2005	99.888
2006	98.643
2007	98.129
2008	95.538
2009	95.656
2010	94.429
2011	92.390
2012	93.016
2013	94.428
2014	96.003
2015	99.254
2016	100.000
2017	99.155
2018	98.568
2019	98.415
2020	100.256
2021	102.287
2022	104.385
2023	107.003
2024	109.015
2025	110.711
2026	112.383
2027	114.088
2028	115.898
2029	117.627