Year	Index (Units)
1980	8.729
1981	10.029
1982	11.121
1983	12.203
1984	13.168
1985	13.853
1986	17.990
1987	19.375
1988	21.376
1989	22.224
1990	23.476
1991	26.744
1992	29.043
1993	29.569
1994	30.728
1995	30.581
1996	31.399
1997	31.577
1998	32.482
1999	33.757
2000	35.421
2001	37.990
2002	41.784
2003	46.242
2004	51.680
2005	56.839
2006	60.958
2007	64.030
2008	70.188
2009	74.034
2010	75.274
2011	79.805
2012	82.426
2013	82.983
2014	84.880
2015	84.926
2016	84.399
2017	90.476
2018	96.612
2019	99.786
2020	100.208
2021	101.625
2022	110.283
2023	121.500
2024	128.086
2025	133.401
2026	138.290
2027	142.814
2028	147.681
2029	152.411