Year	Index (Units)
1980	4.508
1981	4.894
1982	5.138
1983	5.472
1984	5.697
1985	6.766
1986	9.576
1987	10.338
1988	11.543
1989	12.803
1990	17.992
1991	23.941
1992	26.073
1993	29.871
1994	33.378
1995	36.276
1996	39.504
1997	42.785
1998	46.843
1999	49.201
2000	52.585
2001	56.181
2002	59.848
2003	62.384
2004	65.524
2005	68.760
2006	72.195
2007	76.677
2008	84.037
2009	85.193
2010	89.335
2011	94.718
2012	97.355
2013	100.000
2014	102.860
2015	105.156
2016	108.003
2017	109.890
2018	111.288
2019	115.256
2020	118.568
2021	121.761
2022	129.340
2023	135.721
2024	141.334
2025	146.172
2026	151.219
2027	156.453
2028	161.901
2029	167.540