Year	Index (Units)
1980	27.054
1981	30.633
1982	32.688
1983	36.786
1984	39.560
1985	43.304
1986	45.201
1987	46.284
1988	46.999
1989	49.634
1990	53.379
1991	57.744
1992	59.993
1993	63.562
1994	67.180
1995	69.967
1996	72.705
1997	73.805
1998	75.443
1999	76.128
2000	77.399
2001	78.719
2002	79.844
2003	81.261
2004	81.701
2005	83.413
2006	86.151
2007	87.862
2008	91.578
2009	90.100
2010	92.100
2011	92.900
2012	95.300
2013	95.700
2014	97.300
2015	97.900
2016	99.600
2017	101.200
2018	101.400
2019	102.500
2020	102.200
2021	105.500
2022	114.300
2023	118.200
2024	121.206
2025	123.887
2026	126.686
2027	129.437
2028	132.143
2029	134.782