Year	Index (Units)
1980	12.768
1981	15.387
1982	18.203
1983	21.199
1984	23.713
1985	25.869
1986	26.563
1987	29.527
1988	30.470
1989	34.202
1990	37.104
1991	36.428
1992	39.720
1993	40.399
1994	45.281
1995	43.956
1996	46.338
1997	49.535
1998	52.210
1999	52.405
2000	52.318
2001	53.308
2002	57.269
2003	59.769
2004	64.459
2005	69.500
2006	71.746
2007	74.962
2008	79.659
2009	91.323
2010	91.140
2011	93.760
2012	99.565
2013	99.358
2014	98.129
2015	100.015
2016	100.089
2017	101.436
2018	105.172
2019	107.475
2020	109.065
2021	105.782
2022	115.034
2023	128.817
2024	133.406
2025	137.855
2026	141.990
2027	146.250
2028	150.638
2029	155.157