53% (1993)

78% (2001)

66% (1971)

29% (2001)

77% (1997)

39% (1985)

52% (1992)

82% (1999)

50% (2002)

0% (1963)

100% (1995)

65% (1987)

0% (1978)

80% (1978)

60% (1987)

40% (1997)

59% (2000)

0% (1969)

38% (1998)

0% (2003)