Year	Index (Units)
1980	6.283
1981	7.018
1982	7.629
1983	8.714
1984	13.362
1985	15.718
1986	16.182
1987	17.395
1988	19.074
1989	20.796
1990	23.435
1991	27.277
1992	29.427
1993	31.430
1994	34.592
1995	37.236
1996	40.099
1997	42.609
1998	47.043
1999	50.023
2000	52.933
2001	55.907
2002	58.272
2003	60.133
2004	63.675
2005	67.439
2006	70.886
2007	73.129
2008	78.379
2009	80.525
2010	84.045
2011	87.338
2012	89.080
2013	90.916
2014	93.692
2015	93.017
2016	94.208
2017	96.394
2018	100.000
2019	100.697
2020	102.359
2021	104.695
2022	110.434
2023	115.367
2024	118.767
2025	121.698
2026	124.755
2027	127.889
2028	131.101
2029	134.394