32% (1982)

82% (1973)

40% (1977)

0% (1973)

27% (1998)

0% (1982)

60% (1987)

35% (1997)

60% (1979)

65% (1982)

30% (1971)

33% (2001)

68% (1969)

0% (1979)

58% (1970)

90% (1994)

47% (1985)

0% (2002)

50% (1993)

0% (1996)