Year	Index (Units)
1980	36.194
1981	40.435
1982	44.537
1983	47.582
1984	50.600
1985	52.959
1986	54.928
1987	57.114
1988	59.698
1989	62.552
1990	64.208
1991	65.600
1992	66.875
1993	67.458
1994	68.700
1995	70.100
1996	71.567
1997	72.950
1998	73.908
1999	75.417
2000	77.492
2001	79.250
2002	81.150
2003	82.742
2004	83.517
2005	84.958
2006	86.525
2007	87.958
2008	91.158
2009	92.108
2010	94.133
2011	96.633
2012	98.908
2013	99.425
2014	99.775
2015	100.000
2016	100.017
2017	101.075
2018	101.792
2019	102.533
2020	102.875
2021	104.875
2022	113.825
2023	117.642
2024	119.358
2025	121.729
2026	124.164
2027	126.647
2028	129.180
2029	131.763