77% (1997)

76% (2003)

64% (2000)

60% (1995)

0% (1997)

0% (1993)

54% (1999)

0% (1997)

100% (1998)

58% (2001)

0% (1997)

0% (2000)

90% (1965)

80% (1994)

33% (1999)

50% (1967)

45% (1998)

67% (1996)

40% (1997)

68% (1993)