Year	%
1984	55.65732571597282
1985	52.95506526055292
1986	65.71200577247726
1987	91.29087177655751
1988	65.23694435255331
1989	60.8727511653859
1990	59.23089026601007
1991	42.7878829757699
1992	44.2547503533045
1993	51.616717662940026
1994	55.52352352718588
1995	55.98128894527054
1996	60.48410917290782
1997	72.23296790513687
1998	86.49945550631749
1999	94.34037390922244
2000	146.3346037180276
2001	125.2948919618555
2002	123.05433176039813
2003	93.32633695308895
2004	97.07568189286864
2005	114.4212983242719
2006	120.92499935056729
2007	161.8556400003256
2008	282.4066672027382
2009	154.4770188943318
2010	144.32617863536746
2011	176.15316289436723
2012	121.00533020135188
2013	104.04857479210783
2014	114.90437958535483
2015	133.67209390375913
2016	89.81889288316674
2017	100.09301156252366