74% (1985)

70% (1987)

70% (1983)

83% (1985)

73% (1983)

75% (1990)

67% (1997)

59% (1984)

62% (1999)

52% (1986)

68% (1989)

70% (2013)

46% (1985)

42% (1986)

76% (1998)

67% (1994)

78% (1997)

50% (1987)

67% (1987)

66% (1992)