74% (1985)

70% (1987)

70% (1983)

64% (2007)

62% (1999)

67% (1997)

83% (1985)

75% (1990)

72% (1998)

59% (1984)

46% (1985)

52% (1986)

50% (1987)

65% (1995)

76% (1998)

62% (1986)

67% (1987)

42% (1986)

60% (1984)

66% (2020)