53% (2004)

66% (1997)

56% (1988)

67% (1994)

34% (1982)

20% (1997)

60% (1996)

58% (1979)

61% (1996)

68% (1999)

52% (1986)

50% (1980)

40% (1997)

0% (1978)

50% (1983)

70% (1978)

67% (1999)

60% (1991)

0% (1978)

62% (1977)