Year	Index (Units)
1980	3.508
1981	3.894
1982	4.206
1983	4.427
1984	5.532
1985	5.226
1986	5.458
1987	5.730
1988	6.037
1989	6.761
1990	7.487
1991	8.111
1992	8.397
1993	9.701
1994	10.978
1995	13.082
1996	17.972
1997	22.754
1998	22.478
1999	27.205
2000	31.039
2001	32.183
2002	33.239
2003	36.846
2004	41.292
2005	41.736
2006	45.493
2007	52.178
2008	65.574
2009	68.609
2010	71.409
2011	82.017
2012	91.728
2013	100.000
2014	103.745
2015	111.145
2016	121.700
2017	134.478
2018	126.574
2019	133.083
2020	143.079
2021	157.491
2022	199.218
2023	239.317
2024	294.157
2025	346.013
2026	404.884
2027	461.697
2028	569.406
2029	619.426