86% (2018)

69% (2009)

79% (1999)

72% (1999)

62% (1998)

68% (2009)

70% (1994)

0% (1981)

51% (1976)

88% (1996)

77% (2008)

65% (2003)

50% (1983)

74% (2015)

50% (2005)

60% (1989)

0% (2012)

20% (2000)

85% (1970)

73% (2004)