Year	Index (Units)
1980	7.956
1981	8.814
1982	9.640
1983	9.869
1984	9.774
1985	10.222
1986	9.499
1987	9.617
1988	9.845
1989	11.405
1990	11.216
1991	13.099
1992	13.957
1993	16.177
1994	17.260
1995	26.770
1996	30.402
1997	35.120
1998	35.922
1999	34.850
2000	35.998
2001	35.858
2002	34.012
2003	40.925
2004	45.446
2005	49.561
2006	50.791
2007	57.342
2008	65.655
2009	70.338
2010	72.567
2011	77.790
2012	81.462
2013	83.656
2014	87.627
2015	88.033
2016	92.463
2017	100.000
2018	99.365
2019	101.783
2020	108.638
2021	111.599
2022	129.482
2023	143.574
2024	152.236
2025	159.880
2026	167.857
2027	176.189
2028	185.041
2029	194.348