Year	2015 = 100
1980	45.2676623501
1981	17.4205509148
1982	17.2367245897
1983	14.0206228818
1984	16.006634405
1985	17.8826937343
1986	12.8248927609
1987	16.6732195879
1988	16.5082912954
1989	21.1039494527
1990	17.7194834476
1991	0.6476871494
1992	0.8899255795
1993	0.7851273933
1994	0.7782553812
1995	0.8614535987
1996	1.2696019771
1997	7.9927610112
1998	9.5524088546
1999	22.6947866415
2000	35.3960168163
2001	22.3561103282
2002	21.221978876
2003	16.8660804383
2004	30.9324366763
2005	41.1569877398
2006	50.9940236502
2007	71.6741551825
2008	106.4195660963
2009	72.8217312135
2010	91.1518642018
2011	144.5468771191
2012	163.939482858
2013	161.6364839239
2014	153.0328897905
2015	100
2016	81.3335510146
2017	110.4680506484
2018	161.2286829099
2019	154.4066998878
2020	87.9054346309
2021	149.8830263939