Year	Index (Units)
1980	34.182
1981	38.858
1982	43.534
1983	48.545
1984	53.666
1985	57.007
1986	59.122
1987	61.349
1988	63.687
1989	67.918
1990	75.277
1991	84.084
1992	92.030
1993	98.908
1994	109.463
1995	118.595
1996	119.604
1997	123.494
1998	128.206
1999	130.340
2000	121.727
2001	109.213
2002	101.275
2003	100.000
2004	96.500
2005	105.969
2006	108.874
2007	116.857
2008	128.362
2009	128.783
2010	133.065
2011	168.522
2012	162.331
2013	165.097
2014	176.883
2015	206.776
2016	256.368
2017	328.096
2018	324.188
2019	324.881
2020	334.032
2021	346.399
2022	360.621
2023	369.868
2024	379.352
2025	389.080
2026	399.056
2027	409.289
2028	419.784
2029	430.548