80% (1987)

65% (1997)

60% (1979)

0% (1982)

0% (1977)

71% (1999)

54% (1999)

20% (2004)

0% (1981)

0% (1979)

0% (1988)

0% (1980)

0% (1979)

0% (2002)

35% (1987)

56% (1998)

40% (2004)

95% (1998)

0% (1968)

69% (2002)