78% (1979)

82% (1998)

59% (2009)

66% (1981)

67% (2009)

72% (1980)

73% (1987)

69% (1986)

57% (1982)

58% (1990)

63% (2021)

55% (1988)

58% (1987)

42% (1986)

49% (1998)

64% (1984)

59% (1985)

66% (1989)

74% (1982)

64% (2003)