Year	Percent
1994	38.29139
1995	53.6
1996	35.7
1997	39.36433
1998	38.70941
1999	44.48692
2000	55.85678
2001	54.46946
2002	55.95549
2003	55.39984
2004	53.07206
2005	54.71074
2006	52.65887
2007	52.6179
2008	53.69422
2009	55.70916
2010	55.57087
2011	55.88214
2012	56.86715
2013	56.22675
2014	56.85544
2015	56.24062
2016	55.47322
2017	55.77228