53% (1993)

77% (1997)

66% (1971)

0% (1963)

0% (2003)

78% (2001)

70% (1981)

100% (1995)

52% (1992)

39% (1985)

82% (1999)

29% (2001)

0% (1978)

50% (2002)

40% (1997)

0% (1958)

64% (1975)

90% (1969)

59% (2000)

60% (1987)