50% (1988)

77% (1986)

59% (1999)

33% (1987)

68% (1973)

60% (1975)

0% (1988)

50% (1992)

53% (1988)

20% (1989)

50% (1993)

90% (1974)

0% (1981)

62% (1974)

60% (1991)

73% (1986)

67% (1975)

45% (1988)

0% (1975)

0% (1991)