Year	2015 = 100
1980	81.0670738792
1981	65.4074421146
1982	69.9565076898
1983	85.420577831
1984	58.4818601589
1985	69.0650951296
1986	68.0010670468
1987	62.4874670158
1988	65.707764115
1989	64.4134505888
1990	62.6629936118
1991	56.7476144607
1992	57.2801780996
1993	50.8618917592
1994	37.2794547583
1995	62.8149694647
1996	62.1536664499
1997	64.1318740443
1998	65.7896502361
1999	70.4515559511
2000	72.9020448554
2001	46.3204383093
2002	44.3796598422
2003	50.5121642471
2004	44.0942567203
2005	40.7301169828
2006	43.1956606988
2007	47.9159782952
2008	47.0721892218
2009	50.4126665448
2010	56.9090496528
2011	71.141117242
2012	73.7801502773
2013	74.0465691964
2014	88.1697175147
2015	100
2016	91.8890831751
2017	71.4922774252
2018	53.5374652094
2019	49.8745853656
2020	49.7123469971
2021	59.7975318409