Year	%
1995	45.65
1996	29.45
1997	28.19
1998	31.18
1999	27
2000	33.76
2001	51.45
2002	50.67
2003	43.26
2004	56.84
2005	49.73
2006	52.16
2007	45.87
2008	48.63
2009	48.57
2010	51.84
2011	50.12
2012	53.77
2013	53.76
2014	55.73
2015	54.67
2016	52.57
2017	13.46