55% (1969)

40% (1990)

54% (1970)

65% (1973)

62% (1978)

64% (2000)

33% (1984)

43% (1998)

0% (1998)

64% (1982)

35% (1986)

0% (1977)

57% (1968)

62% (2009)

55% (1972)

44% (1986)

40% (1976)

0% (1984)

32% (1973)

0% (1987)