Year	Index (Units)
1980	13.529
1981	15.031
1982	14.909
1983	16.384
1984	16.547
1985	15.031
1986	16.399
1987	18.318
1988	19.506
1989	20.903
1990	24.152
1991	27.171
1992	31.751
1993	38.141
1994	39.432
1995	41.596
1996	44.194
1997	47.543
1998	46.872
1999	48.258
2000	47.690
2001	48.011
2002	48.456
2003	47.098
2004	50.083
2005	51.315
2006	53.111
2007	56.720
2008	63.550
2009	66.429
2010	70.514
2011	78.463
2012	87.009
2013	90.487
2014	92.702
2015	93.974
2016	94.727
2017	96.879
2018	98.203
2019	99.505
2020	97.919
2021	98.128
2022	100.680
2023	103.314
2024	107.216
2025	110.433
2026	112.683
2027	114.936
2028	117.235
2029	119.580