62% (1978)

0% (1984)

32% (1973)

55% (1969)

0% (1977)

40% (1990)

64% (1982)

54% (1970)

65% (1973)

62% (2009)

64% (2000)

0% (1987)

0% (1998)

35% (1986)

33% (1984)

70% (1982)

0% (1993)

44% (1986)

40% (2000)

51% (1970)