55% (1979)

45% (2005)

54% (1973)

50% (1974)

100% (2006)

80% (1999)

68% (1975)

38% (1976)

54% (1978)

47% (1998)

81% (1982)

40% (2002)

62% (1994)

52% (1993)

60% (2004)

0% (1979)

60% (1994)

56% (2001)

65% (2001)

65% (1973)