Year	Index (Units)
1980	0.129
1981	0.144
1982	0.144
1983	0.154
1984	0.159
1985	0.159
1986	0.182
1987	0.227
1988	0.328
1989	0.468
1990	0.666
1991	0.975
1992	1.304
1993	1.636
1994	2.473
1995	3.383
1996	4.806
1997	8.124
1998	11.545
1999	12.816
2000	14.227
2001	15.539
2002	17.113
2003	18.789
2004	21.285
2005	24.936
2006	30.690
2007	36.383
2008	48.022
2009	56.165
2010	63.657
2011	72.773
2012	80.515
2013	87.042
2014	93.124
2015	98.833
2016	104.177
2017	110.104
2018	118.772
2019	127.937
2020	140.500
2021	151.934
2022	179.291
2023	217.272
2024	248.104
2025	267.578
2026	281.153
2027	295.219
2028	310.086
2029	325.602