Year	Index (Units)
1980	3.660
1981	3.928
1982	4.322
1983	4.839
1984	5.281
1985	5.515
1986	6.020
1987	6.579
1988	6.939
1989	7.372
1990	8.093
1991	8.904
1992	9.354
1993	10.309
1994	11.310
1995	12.319
1996	13.058
1997	14.410
1998	25.593
1999	26.080
2000	28.513
2001	32.100
2002	35.290
2003	37.120
2004	39.490
2005	46.260
2006	49.310
2007	52.160
2008	57.930
2009	59.540
2010	63.680
2011	66.090
2012	68.500
2013	74.040
2014	80.230
2015	82.920
2016	85.430
2017	88.510
2018	91.310
2019	93.670
2020	95.240
2021	97.030
2022	102.280
2023	105.150
2024	107.792
2025	110.543
2026	113.331
2027	116.181
2028	119.100
2029	122.091