57% (1997)

0% (1976)

50% (1977)

40% (1988)

53% (1991)

60% (1979)

47% (1987)

58% (1977)

50% (1980)

35% (1992)

80% (1965)

50% (1958)

57% (1978)

0% (1962)

80% (1967)

50% (1993)

40% (1994)

73% (1955)

50% (1998)

0% (1982)