61% (1988)

58% (1986)

66% (1980)

61% (1987)

31% (1986)

45% (1997)

63% (1980)

56% (1978)

70% (1994)

0% (1987)

0% (1979)

53% (1987)

0% (1981)

42% (1992)

35% (1982)

63% (1978)

45% (1986)

40% (1980)

30% (1976)

55% (1979)