50% (1978)

70% (2009)

62% (1978)

69% (1971)

79% (1953)

45% (2006)

0% (1970)

50% (1985)

95% (1987)

50% (2001)

60% (1970)

75% (1982)

50% (2000)

57% (1999)

0% (1973)

65% (2016)

0% (1985)

63% (1963)

50% (1967)

15% (2006)