62% (1988)

66% (1980)

61% (1987)

58% (1986)

40% (1980)

31% (1986)

45% (1997)

56% (1978)

63% (1980)

45% (1986)

42% (1992)

0% (1987)

0% (1979)

40% (1976)

30% (1986)

53% (1987)

20% (1977)

70% (1994)

35% (1982)

95% (1979)