Year	Index (Units)
1980	34.550
1981	42.946
1982	47.412
1983	48.181
1984	52.234
1985	51.675
1986	49.998
1987	46.679
1988	46.958
1989	46.574
1990	45.631
1991	46.315
1992	43.577
1993	43.435
1994	58.869
1995	65.261
1996	68.745
1997	70.759
1998	73.993
1999	72.469
2000	74.428
2001	77.358
2002	79.296
2003	78.126
2004	78.317
2005	84.434
2006	84.468
2007	84.513
2008	94.072
2009	94.500
2010	95.392
2011	98.187
2012	98.644
2013	100.898
2014	100.000
2015	100.961
2016	101.142
2017	101.334
2018	104.124
2019	101.500
2020	104.442
2021	108.450
2022	113.033
2023	117.217
2024	124.678
2025	130.388
2026	134.560
2027	137.251
2028	139.996
2029	142.796