77% (1986)

59% (1999)

67% (1975)

50% (1992)

68% (1973)

65% (1988)

60% (1975)

34% (1987)

20% (1988)

62% (1974)

50% (1992)

60% (1990)

60% (1991)

45% (1988)

0% (1991)

40% (1995)

60% (1992)

73% (1986)

0% (1988)

0% (1994)