Year	Index (Units)
1980	49.061
1981	52.250
1982	60.197
1983	65.742
1984	69.722
1985	75.566
1986	67.036
1987	69.248
1988	69.449
1989	72.532
1990	67.172
1991	68.314
1992	67.357
1993	68.705
1994	86.087
1995	88.799
1996	90.930
1997	92.294
1998	93.401
1999	94.429
2000	100.000
2001	105.571
2002	109.348
2003	113.409
2004	118.508
2005	122.071
2006	126.209
2007	131.870
2008	138.221
2009	144.840
2010	150.487
2011	153.846
2012	162.937
2013	163.614
2014	163.601
2015	165.141
2016	166.466
2017	166.618
2018	169.455
2019	175.726
2020	177.132
2021	177.106
2022	199.144
2023	216.036
2024	220.263
2025	225.180
2026	229.855
2027	234.287
2028	238.805
2029	243.410