Year	% of total
1990	99.27731707317072
1991	99.27731707317072
1992	99.27731707317072
1993	100.17170731707317
1994	99.27731707317072
1995	98.92372093023256
1996	101.04622222222224
1997	99.08702127659575
1998	100.2812244897959
1999	100.66274509803921
2000	100.84249999999999
2001	100.84249999999999
2002	100.32358490566038
2003	101.0154716981132
2004	100.18767857142859
2005	99.26189655172415
2006	99.34236363636364
2007	99.82388888888889
2008	99.82388888888889
2009	99.4321153846154
2010	99.4321153846154
2011	100.2812244897959
2012	99.53285714285714
2013	99.31458333333333
2014	100.44391304347826
2015	99.08702127659575
2016	99.86723404255319