Year	2000 = 100
1980	95.39720758
1981	87.99918572
1982	71.87736182
1983	55.04889195
1984	50.85557981
1985	50.04948862
1986	32.42428709
1987	34.21827873
1988	33.03663562
1989	36.92552841
1990	45.86553603
1991	46.44770001
1992	39.57591882
1993	38.89103379
1994	43.67446551
1995	57.42466074
1996	58.48596163
1997	59.50163781
1998	52.82686008
1999	65.60575573
2000	100
2001	100.1403837
2002	90.78146935
2003	121.1420215
2004	152.4848386
2005	232.6079785
2006	331.1815629
2007	313.4357745
2008	436.3693262
2009	213.5229527
2010	256.9414834
2011	349.646701
2012	303.775854
2013	438.577445
2014	339.9719609
2015	252.784277
2016	178.5680861
2017	207.3701451
2018	235.7276556