85% (1978)

60% (1976)

59% (1975)

69% (1986)

0% (1973)

75% (1978)

0% (1986)

57% (1973)

78% (1977)

70% (1975)

0% (1979)

60% (1983)

0% (1979)

0% (1979)

77% (1975)

0% (1978)

0% (1989)

0% (1981)

35% (1979)

0% (1975)