Year	Index (Units)
1980	5.246
1981	5.348
1982	5.764
1983	5.969
1984	5.950
1985	7.044
1986	7.435
1987	6.755
1988	6.904
1989	7.569
1990	7.964
1991	9.625
1992	11.649
1993	12.812
1994	12.962
1995	14.693
1996	14.828
1997	13.876
1998	14.375
1999	15.517
2000	15.620
2001	14.333
2002	14.570
2003	17.158
2004	17.711
2005	19.775
2006	22.456
2007	26.328
2008	38.011
2009	41.234
2010	44.588
2011	59.405
2012	73.741
2013	79.693
2014	85.594
2015	93.784
2016	100.000
2017	110.687
2018	125.999
2019	145.918
2020	175.618
2021	222.673
2022	298.243
2023	388.369
2024	487.684
2025	576.379
2026	658.693
2027	752.763
2028	860.268
2029	983.125