Year	%
1984	55.63725314383736
1985	52.887070399829646
1986	65.34298872902156
1987	91.16172731717016
1988	64.90471158582818
1989	60.7178997741804
1990	59.13981654211578
1991	42.72056159034028
1992	44.50527815296638
1993	51.72631564134795
1994	55.59680672219914
1995	55.50918159255628
1996	60.1258319478648
1997	73.6401848267272
1998	86.47434179119807
1999	93.98638248126487
2000	145.23092285590553
2001	124.53867556091512
2002	122.29598776551768
2003	92.80458697976557
2004	96.55709758327906
2005	113.51236639242325
2006	119.71439137119371
2007	160.25570240182043
2008	278.0549074787111
2009	151.56928073377227
2010	140.98383276390533
2011	171.7070617285967
2012	117.71424678894908
2013	101.13491579882276
2014	111.75581073752703
2015	130.13733019807447
2016	86.84334856469287
2017	96.4935202473508