Year	Index (Units)
1980	32.497
1981	36.284
1982	39.574
1983	42.819
1984	46.441
1985	48.869
1986	51.208
1987	53.397
1988	57.497
1989	61.254
1990	64.703
1991	65.681
1992	66.264
1993	67.434
1994	68.678
1995	71.563
1996	71.507
1997	72.994
1998	75.256
1999	75.953
2000	77.198
2001	79.748
2002	80.501
2003	80.654
2004	81.140
2005	81.894
2006	82.648
2007	84.923
2008	87.503
2009	89.055
2010	89.343
2011	91.687
2012	94.413
2013	96.829
2014	98.409
2015	100.000
2016	100.087
2017	100.907
2018	102.927
2019	104.468
2020	106.176
2021	108.722
2022	114.575
2023	120.067
2024	122.933
2025	125.392
2026	127.472
2027	130.078
2028	132.755
2029	135.443