Year	2000 = 100
1980	43.49267948
1981	41.70400423
1982	72.15381902
1983	75.87581584
1984	60.28223673
1985	50.0088199
1986	25.29899453
1987	42.03916035
1988	37.78091374
1989	46.14923267
1990	68.10724996
1991	65.83524431
1992	70.09349092
1993	63.78550009
1994	68.56235668
1995	63.88531264
1996	77.91154877
1997	63.95838408
1998	45.64529037
1999	73.17582379
2000	100
2001	89.38724382
2002	98.25324472
2003	117.4362365
2004	145.0885556
2005	195.73402
2006	267.9703539
2007	308.754654
2008	395.5182853
2009	274.2962525
2010	352.5383625
2011	459.3061693
2012	376.9824977
2013	315.8251853
2014	331.117993
2015	244.5283413
2016	253.6727096
2017	322.7808901
2018	375.4479975