Year	%
1995	31.66
1996	53.09
1997	56.85
1998	49.04
1999	55.13
2000	78.56
2001	48.17
2002	47.66
2003	54.08
2004	38.79
2005	46.87
2006	49
2007	42.02
2008	45.78
2009	45.78
2010	43.47
2011	47.88
2012	43.48
2013	42.81
2014	42.71
2015	40.89
2016	41.57
2017	18.81