75% (2013)

70% (1970)

82% (2002)

76% (2011)

78% (2004)

70% (2014)

67% (2016)

63% (2010)

67% (1996)

82% (1994)

72% (2016)

71% (1987)

75% (2010)

65% (1981)

73% (2008)

73% (2015)

93% (2016)

30% (1994)

90% (1970)

87% (2015)