Year	Index (Units)
1980	0.064
1981	0.082
1982	0.163
1983	0.294
1984	0.468
1985	0.766
1986	1.577
1987	4.086
1988	6.197
1989	7.418
1990	9.638
1991	11.450
1992	12.817
1993	13.843
1994	14.819
1995	22.520
1996	28.759
1997	33.280
1998	39.473
1999	44.336
2000	48.308
2001	50.435
2002	53.310
2003	55.430
2004	58.307
2005	60.250
2006	62.692
2007	65.049
2008	69.296
2009	71.772
2010	74.931
2011	77.792
2012	80.568
2013	83.770
2014	87.189
2015	89.047
2016	92.039
2017	98.273
2018	103.020
2019	105.934
2020	109.271
2021	117.308
2022	126.478
2023	132.069
2024	136.711
2025	140.831
2026	145.058
2027	149.411
2028	153.893
2029	158.510