78% (1979)

66% (1981)

82% (1998)

59% (2009)

72% (1980)

67% (2009)

73% (1987)

64% (2003)

69% (1997)

58% (1987)

63% (1989)

43% (1986)

62% (2021)

63% (1984)

74% (1982)

53% (1982)

59% (1985)

58% (1990)

69% (1986)

66% (1989)