Year	Index (Units)
1980	1.346
1981	1.486
1982	1.707
1983	1.980
1984	2.318
1985	2.599
1986	3.220
1987	4.031
1988	4.643
1989	5.578
1990	6.761
1991	7.757
1992	9.397
1993	10.435
1994	11.379
1995	12.444
1996	13.327
1997	14.149
1998	14.862
1999	15.419
2000	15.858
2001	16.242
2002	16.608
2003	17.175
2004	18.575
2005	20.192
2006	21.058
2007	23.350
2008	26.092
2009	30.308
2010	33.842
2011	37.583
2012	40.850
2013	43.675
2014	48.083
2015	53.367
2016	58.817
2017	72.658
2018	87.808
2019	99.992
2020	105.692
2021	110.448
2022	119.836
2023	149.067
2024	197.583
2025	248.372
2026	281.014
2027	311.349
2028	336.166
2029	356.531