Year	Index (Units)
1980	52.068
1981	56.062
1982	61.656
1983	65.254
1984	66.281
1985	65.486
1986	63.882
1987	62.537
1988	62.063
1989	62.498
1990	62.396
1991	62.580
1992	63.297
1993	65.391
1994	67.719
1995	68.702
1996	70.217
1997	71.646
1998	71.046
1999	70.338
2000	69.669
2001	69.085
2002	69.492
2003	70.859
2004	72.584
2005	74.272
2006	75.072
2007	78.076
2008	82.075
2009	83.350
2010	84.170
2011	84.330
2012	86.530
2013	89.950
2014	92.190
2015	92.900
2016	95.040
2017	96.320
2018	98.230
2019	99.400
2020	97.800
2021	97.400
2022	100.900
2023	100.600
2024	102.008
2025	103.845
2026	106.027
2027	108.255
2028	110.531
2029	112.854