Year	Index (Units)
1980	11.485
1981	11.980
1982	13.253
1983	15.052
1984	15.672
1985	16.617
1986	17.765
1987	19.598
1988	22.205
1989	24.787
1990	27.035
1991	29.991
1992	31.527
1993	35.066
1994	38.036
1995	40.322
1996	40.759
1997	42.491
1998	46.103
1999	49.797
2000	51.500
2001	54.781
2002	58.181
2003	61.418
2004	65.642
2005	68.452
2006	73.042
2007	79.110
2008	83.609
2009	83.062
2010	83.998
2011	86.653
2012	88.790
2013	91.232
2014	93.210
2015	94.515
2016	96.769
2017	98.352
2018	100.000
2019	99.534
2020	102.095
2021	105.319
2022	115.578
2023	122.975
2024	130.044
2025	134.567
2026	139.964
2027	145.214
2028	150.526
2029	156.033