Year	2015 = 100
1980	29.4446040547
1981	34.5836837546
1982	33.8440253903
1983	36.363112437
1984	31.0468908969
1985	30.1104159907
1986	23.1012209378
1987	15.0615204597
1988	15.6860142188
1989	18.9656317556
1990	18.1051410854
1991	23.5347771763
1992	24.753257573
1993	22.920887123
1994	24.3061827517
1995	19.5814514297
1996	17.623306288
1997	18.1159084458
1998	19.2367834177
1999	19.1034928192
2000	20.269594041
2001	23.2478574039
2002	28.7820753267
2003	27.8230189779
2004	34.8685705678
2005	37.102065318
2006	37.2074882672
2007	41.9210320015
2008	54.5009175374
2009	62.7115887839
2010	65.3116518859
2011	67.1152446405
2012	77.3652849041
2013	85.6705330832
2014	93.1725879164
2015	100
2016	95.7573844668
2017	87.3307356486
2018	82.3502633532
2019	75.7373027638
2020	62.2726357052
2021	57.828413702