Year	Index (Units)
1980	43.286
1981	49.631
1982	56.204
1983	64.387
1984	66.064
1985	72.972
1986	74.731
1987	69.510
1988	66.775
1989	67.206
1990	66.496
1991	65.988
1992	65.988
1993	62.841
1994	90.962
1995	95.530
1996	99.933
1997	100.291
1998	97.298
1999	93.200
2000	100.702
2001	103.279
2002	113.055
2003	111.090
2004	110.829
2005	112.524
2006	120.467
2007	120.302
2008	137.776
2009	136.179
2010	139.258
2011	145.304
2012	153.915
2013	157.865
2014	179.996
2015	199.185
2016	190.290
2017	203.936
2018	213.326
2019	208.973
2020	212.811
2021	218.558
2022	235.134
2023	244.593
2024	256.822
2025	267.609
2026	276.975
2027	285.284
2028	293.843
2029	302.658