75% (1992)

60% (1971)

77% (1969)

66% (1999)

72% (1979)

72% (1992)

60% (1987)

60% (2002)

55% (1969)

60% (1974)

55% (1970)

55% (1969)

0% (1970)

65% (1976)

60% (1987)

60% (1979)

0% (1977)

0% (1992)

56% (1984)

67% (1979)