Year	Index (Units)
1980	1.064
1981	1.144
1982	1.232
1983	1.301
1984	1.563
1985	2.272
1986	2.446
1987	2.777
1988	3.995
1989	5.619
1990	8.455
1991	12.436
1992	12.965
1993	13.646
1994	14.773
1995	16.625
1996	17.523
1997	18.977
1998	19.894
1999	21.181
2000	22.817
2001	24.844
2002	26.142
2003	33.317
2004	50.463
2005	52.577
2006	56.559
2007	60.034
2008	66.424
2009	67.382
2010	71.647
2011	77.708
2012	80.579
2013	84.472
2014	87.005
2015	87.733
2016	89.149
2017	92.073
2018	95.355
2019	97.081
2020	100.752
2021	109.056
2022	118.666
2023	124.345
2024	129.604
2025	134.752
2026	140.106
2027	145.671
2028	151.458
2029	157.475