Year	2015 = 100
1980	19.6362808051
1981	17.3648904185
1982	15.3586001564
1983	16.220499746
1984	24.6365478064
1985	18.5520041748
1986	17.3212408932
1987	16.9321274163
1988	21.5778247015
1989	19.6563982356
1990	18.6397797104
1991	22.2217413297
1992	27.1198859149
1993	34.1440459527
1994	37.6209204726
1995	42.0503445411
1996	40.3705285542
1997	39.1200321662
1998	29.4647116255
1999	31.4684528868
2000	17.2327241954
2001	11.7382324231
2002	14.4854783084
2003	18.4814723235
2004	24.2816576357
2005	25.8311043245
2006	30.339085076
2007	41.0968004574
2008	52.4634054386
2009	41.1599871186
2010	55.8799803301
2011	104.4558035608
2012	124.8523355479
2013	121.5386575111
2014	114.5143341415
2015	100
2016	109.2162607131
2017	124.8036343701
2018	142.1355091638
2019	115.1155966236
2020	94.583180367
2021	92.703065187