55% (1995)

64% (1990)

0% (1986)

43% (1999)

66% (2000)

35% (1987)

67% (1982)

73% (1994)

71% (1980)

80% (1996)

30% (1984)

60% (1995)

0% (1994)

55% (1993)

50% (1993)

45% (1996)

60% (1980)

37% (1987)

57% (1977)

48% (1982)