100% (1983)

32% (1993)

49% (1984)

72% (1971)

53% (1983)

73% (1971)

66% (1979)

64% (1984)

30% (1992)

47% (1980)

50% (1999)

100% (2004)

44% (1973)

30% (1991)

32% (1995)

49% (2007)

33% (1992)

25% (1992)

52% (1974)

20% (1975)