53% (1993)

78% (2001)

77% (1997)

40% (2003)

60% (1987)

82% (1999)

52% (1992)

66% (1971)

0% (1963)

90% (2001)

50% (2002)

65% (1987)

80% (2018)

50% (1982)

20% (1997)

40% (1978)

0% (1958)

29% (2001)

70% (1971)

60% (1976)