Year	Index (Units)
1980	34.558
1981	43.835
1982	46.760
1983	47.533
1984	50.155
1985	50.690
1986	53.106
1987	61.624
1988	67.022
1989	72.215
1990	75.652
1991	80.546
1992	83.815
1993	86.803
1994	88.802
1995	90.782
1996	91.623
1997	94.201
1998	97.550
1999	99.500
2000	102.025
2001	105.675
2002	107.750
2003	111.000
2004	112.575
2005	113.925
2006	116.250
2007	120.825
2008	126.675
2009	132.118
2010	135.768
2011	136.955
2012	138.800
2013	140.825
2014	141.950
2015	145.475
2016	146.700
2017	151.200
2018	154.800
2019	159.000
2020	167.500
2021	171.425
2022	182.875
2023	204.895
2024	220.530
2025	233.770
2026	244.060
2027	253.615
2028	263.544
2029	273.861