Year	Index (Units)
1980	1.112
1981	1.193
1982	1.279
1983	1.356
1984	1.880
1985	2.460
1986	2.568
1987	3.150
1988	4.908
1989	6.605
1990	11.884
1991	12.823
1992	13.486
1993	13.862
1994	15.846
1995	17.306
1996	17.990
1997	19.495
1998	21.019
1999	22.091
2000	24.084
2001	25.140
2002	27.783
2003	39.633
2004	51.024
2005	54.819
2006	57.560
2007	62.670
2008	65.501
2009	69.277
2010	73.598
2011	79.310
2012	82.408
2013	85.602
2014	86.956
2015	88.995
2016	90.504
2017	94.309
2018	95.413
2019	98.901
2020	104.394
2021	113.263
2022	122.128
2023	126.487
2024	131.511
2025	136.736
2026	142.168
2027	147.815
2028	153.687
2029	159.793