64% (1976)

62% (1979)

63% (1979)

51% (1973)

69% (2004)

50% (1978)

55% (1998)

65% (2002)

50% (1975)

55% (1996)

0% (1977)

38% (1998)

70% (1989)

0% (1977)

53% (1987)

53% (1989)

52% (1973)

53% (1997)

60% (1998)

65% (1997)