100% (1983)

32% (1993)

49% (1984)

72% (1971)

73% (1971)

66% (1979)

64% (1984)

100% (2004)

30% (1992)

47% (1980)

53% (1983)

32% (1995)

30% (1991)

25% (1992)

20% (2006)

49% (2007)

20% (1983)

50% (1999)

40% (1998)

55% (2000)