Year	2015 = 100
1980	32.0596231149
1981	25.3283670433
1982	25.0167343143
1983	30.4750638741
1984	26.2937301476
1985	28.5952041584
1986	45.6015969383
1987	43.7278411809
1988	65.5000646547
1989	60.1027198745
1990	70.0010597673
1991	60.4084685926
1992	68.2089103361
1993	65.7854667898
1994	51.8950164221
1995	60.4511094703
1996	44.3677867593
1997	33.8304374052
1998	34.4959542127
1999	30.8910715308
2000	23.8476853867
2001	24.4022827224
2002	24.4022827224
2003	34.3850347408
2004	44.2468845509
2005	35.6162408242
2006	51.9912817298
2007	54.3505387778
2008	90.9661640049
2009	92.0387552455
2010	118.9694472207
2011	88.7842549673
2012	101.176855539
2013	96.7190021531
2014	89.0557908181
2015	100
2016	66.3608986559
2017	70.4338614887
2018	34.498172596
2019	45.5097026729
2020	30.6159912462
2021	32.7523001945