75% (2001)

68% (2001)

63% (2004)

64% (2000)

63% (1994)

67% (1998)

61% (2000)

73% (1999)

65% (1992)

61% (2001)

57% (1998)

69% (1990)

45% (1996)

58% (1995)

0% (1995)

10% (1999)

85% (1992)

0% (2008)

60% (2001)