67% (1984)

70% (2005)

0% (1987)

69% (2002)

64% (2015)

72% (1999)

65% (1997)

73% (1989)

72% (1988)

50% (1985)

78% (1990)

68% (1970)

77% (2011)

0% (2006)

68% (1991)

79% (2003)

78% (1970)

52% (2010)

69% (2011)

0% (1998)