Year	Index (Units)
1980	34.425
1981	37.293
1982	37.279
1983	40.251
1984	42.611
1985	42.768
1986	42.733
1987	42.760
1988	43.947
1989	45.714
1990	46.863
1991	47.717
1992	49.496
1993	52.453
1994	54.310
1995	55.577
1996	57.235
1997	56.162
1998	55.930
1999	58.910
2000	63.170
2001	63.670
2002	64.602
2003	66.014
2004	68.073
2005	71.352
2006	75.958
2007	77.395
2008	82.513
2009	83.231
2010	87.100
2011	90.105
2012	93.048
2013	95.166
2014	97.827
2015	100.000
2016	98.892
2017	101.012
2018	103.145
2019	104.074
2020	108.550
2021	113.591
2022	120.047
2023	124.164
2024	126.961
2025	130.674
2026	133.152
2027	135.852
2028	138.508
2029	141.214