58% (1995)

78% (1987)

77% (1974)

62% (2005)

59% (2000)

68% (1991)

72% (1977)

58% (1975)

71% (1994)

74% (1976)

65% (1982)

68% (1975)

52% (1968)

59% (1972)

71% (1985)

0% (2015)

0% (1982)

50% (1969)

53% (1969)

55% (1969)