60% (1987)

66% (1999)

77% (1969)

75% (1992)

60% (1971)

55% (1969)

72% (1992)

65% (1976)

60% (2002)

72% (1979)

60% (1974)

40% (1978)

0% (1970)

61% (1981)

60% (1987)

55% (1978)

78% (1985)

60% (1979)

67% (1979)

0% (1992)