Year	2015 = 100
1980	24.8707750338
1981	28.0289686967
1982	25.3642427938
1983	23.2916782062
1984	17.0739844484
1985	14.754685982
1986	16.1363957071
1987	14.5079521032
1988	17.3207183271
1989	21.8606217074
1990	23.2916782062
1991	25.1175089151
1992	26.7459525189
1993	25.9070573276
1994	20.8736861898
1995	28.8433093452
1996	24.7017059477
1997	32.4425599086
1998	27.2162508685
1999	23.9621339126
2000	25.9564041039
2001	22.7295138558
2002	24.2579627282
2003	34.7105808186
2004	36.6074844603
2005	51.7663938426
2006	49.9457647296
2007	51.4874765769
2008	64.309831369
2009	68.5385070555
2010	68.9034612093
2011	80.7526871286
2012	98.2891233627
2013	107.1738487464
2014	97.7119735289
2015	100
2016	61.7296124629
2017	63.0953554902
2018	75.2834040054
2019	84.3827038697
2020	75.5895375212
2021	68.0981165572