Year	Index (Units)
1980	2.147
1981	2.801
1982	3.694
1983	4.414
1984	4.843
1985	5.354
1986	6.130
1987	7.078
1988	8.942
1989	9.749
1990	10.905
1991	11.836
1992	13.560
1993	14.915
1994	20.731
1995	30.896
1996	37.001
1997	38.663
1998	41.064
1999	44.017
2000	49.109
2001	52.997
2002	61.741
2003	60.689
2004	69.159
2005	81.859
2006	90.672
2007	100.000
2008	107.486
2009	114.934
2010	126.679
2011	139.836
2012	147.480
2013	155.521
2014	165.990
2015	176.785
2016	192.626
2017	202.183
2018	218.960
2019	233.241
2020	243.296
2021	259.453
2022	280.187
2023	300.871
2024	318.160
2025	339.742
2026	361.572
2027	382.632
2028	403.165
2029	425.114