69% (2005)

65% (2002)

68% (1997)

67% (2005)

68% (2004)

69% (1996)

63% (2004)

61% (1997)

56% (2001)

44% (2003)

50% (1998)

100% (2004)

70% (2000)

20% (1998)

0% (2003)

0% (1993)

0% (1993)

50% (1993)

60% (2004)

62% (2003)