69% (1999)

59% (1996)

68% (1982)

66% (1986)

48% (2013)

70% (1998)

81% (1986)

82% (1994)

62% (1957)

57% (1991)

74% (1991)

81% (1992)

82% (1999)

71% (1987)

62% (1997)

67% (1960)

77% (1959)

72% (1981)

30% (2014)

65% (1988)