83% (1992)

71% (1984)

65% (1979)

48% (1987)

69% (1982)

60% (1992)

57% (1982)

50% (1985)

53% (1994)

50% (1982)

0% (1984)

75% (1992)

80% (1991)

70% (1985)

60% (1989)

70% (1980)

50% (1985)

60% (1991)

43% (1982)

50% (1990)