64% (1986)

60% (1998)

79% (1987)

10% (2002)

40% (2000)

0% (1991)

0% (2001)

58% (1961)

0% (1982)

0% (1965)

0% (1989)

40% (1996)

0% (1986)

0% (1993)

0% (1992)

0% (1970)

10% (1986)

0% (1990)

50% (1964)