Year	Index (Units)
1980	3.717
1981	3.586
1982	3.955
1983	4.260
1984	5.210
1985	6.420
1986	6.877
1987	8.048
1988	10.145
1989	10.766
1990	10.672
1991	11.354
1992	12.487
1993	13.832
1994	15.814
1995	16.999
1996	20.258
1997	21.260
1998	23.879
1999	27.393
2000	30.428
2001	32.708
2002	32.586
2003	33.482
2004	36.973
2005	42.809
2006	46.408
2007	49.206
2008	53.818
2009	61.949
2010	66.709
2011	75.150
2012	77.413
2013	78.599
2014	86.146
2015	89.359
2016	100.000
2017	97.351
2018	97.405
2019	97.724
2020	101.977
2021	110.720
2022	126.832
2023	135.653
2024	137.745
2025	143.855
2026	152.126
2027	159.203
2028	166.546
2029	174.246