53% (2004)

66% (1997)

67% (1999)

68% (1999)

58% (1979)

66% (1994)

30% (1982)

50% (1980)

52% (1986)

56% (1988)

61% (1996)

60% (1996)

0% (1978)

50% (1983)

15% (1997)

68% (2000)

20% (1980)

62% (1977)

60% (1991)

0% (1978)