Year	Index (Units)
1980	41.232
1981	43.351
1982	46.633
1983	49.250
1984	51.929
1985	54.331
1986	55.851
1987	56.792
1988	58.024
1989	60.807
1990	62.517
1991	64.316
1992	66.518
1993	69.174
1994	70.623
1995	73.536
1996	73.887
1997	74.446
1998	75.791
1999	76.244
2000	77.781
2001	79.323
2002	80.624
2003	82.116
2004	83.688
2005	85.431
2006	87.366
2007	89.054
2008	90.753
2009	91.238
2010	92.964
2011	94.644
2012	96.500
2013	97.727
2014	98.687
2015	100.000
2016	101.921
2017	103.786
2018	105.395
2019	107.258
2020	108.974
2021	112.431
2022	119.055
2023	123.385
2024	127.205
2025	129.760
2026	132.168
2027	134.668
2028	137.324
2029	140.004