Year	Index (Units)
1980	43.371
1981	47.003
1982	49.379
1983	51.181
1984	51.920
1985	53.050
1986	53.928
1987	56.475
1988	59.817
1989	63.474
1990	67.096
1991	70.646
1992	73.493
1993	75.176
1994	78.689
1995	83.206
1996	86.616
1997	90.445
1998	97.739
1999	95.220
2000	96.487
2001	98.338
2002	100.000
2003	102.150
2004	105.796
2005	111.182
2006	116.857
2007	119.747
2008	125.895
2009	126.140
2010	131.288
2011	136.202
2012	138.802
2013	141.271
2014	143.308
2015	144.343
2016	148.148
2017	150.963
2018	153.119
2019	154.672
2020	152.664
2021	155.396
2022	162.728
2023	164.732
2024	166.058
2025	166.760
2026	170.236
2027	175.309
2028	179.243
2029	181.983