85% (1980)

42% (1976)

49% (1973)

55% (1975)

73% (1989)

54% (1977)

0% (1977)

73% (1992)

72% (1990)

50% (1971)

55% (1973)

0% (1965)

10% (1971)

20% (1977)

57% (1974)

59% (1991)

0% (1989)

65% (1978)

0% (1968)

0% (1986)