Year	2015 = 100
1980	23.2794187703
1981	24.5362692937
1982	26.6264062022
1983	29.4640092693
1984	38.4668240869
1985	33.0601520874
1986	38.8543991491
1987	27.5704282976
1988	24.9238443558
1989	22.7465030712
1990	25.9121607444
1991	17.0533023684
1992	11.3780962235
1993	11.5995676822
1994	10.3814746558
1995	5.011093681
1996	8.5589998006
1997	7.8209317397
1998	5.983349443
1999	13.1078298015
2000	15.226162829
2001	21.9607619631
2002	31.7498752121
2003	27.2049297707
2004	28.1890205185
2005	31.992531265
2006	35.5333156835
2007	39.1305558207
2008	39.1028458944
2009	43.2020370598
2010	66.7401281771
2011	84.3598845785
2012	117.430513149
2013	110.7673512273
2014	100.0816250227
2015	100
2016	84.6077200543
2017	91.4815939352
2018	95.9035280293
2019	87.7495778951
2020	84.6530296586
2021	72.1752872767