Year	Index (Units)
1980	2.838
1981	3.164
1982	3.563
1983	4.609
1984	5.290
1985	7.267
1986	8.873
1987	11.166
1988	13.701
1989	15.547
1990	19.044
1991	23.288
1992	26.497
1993	29.648
1994	33.856
1995	37.820
1996	39.681
1997	41.003
1998	41.322
1999	42.226
2000	44.152
2001	46.040
2002	47.578
2003	49.624
2004	53.110
2005	56.892
2006	63.918
2007	67.170
2008	67.379
2009	69.790
2010	75.972
2011	78.449
2012	79.048
2013	80.835
2014	85.566
2015	89.805
2016	93.901
2017	98.435
2018	100.000
2019	102.568
2020	112.482
2021	120.260
2022	129.777
2023	138.341
2024	142.445
2025	146.696
2026	151.100
2027	155.601
2028	160.225
2029	165.014