Year	Index (Units)
1980	8.975
1981	10.286
1982	10.964
1983	11.823
1984	12.569
1985	13.880
1986	15.824
1987	16.751
1988	17.746
1989	19.373
1990	21.170
1991	26.652
1992	35.101
1993	42.297
1994	54.563
1995	70.823
1996	84.067
1997	88.859
1998	93.258
1999	95.682
2000	95.969
2001	100.000
2002	101.433
2003	105.755
2004	109.952
2005	111.472
2006	114.048
2007	118.244
2008	123.985
2009	131.103
2010	136.230
2011	142.360
2012	155.053
2013	160.100
2014	164.770
2015	172.653
2016	183.699
2017	193.970
2018	202.253
2019	206.200
2020	211.180
2021	226.440
2022	247.425
2023	270.486
2024	290.911
2025	309.388
2026	328.198
2027	346.312
2028	364.425
2029	382.699