68% (2001)

75% (2001)

63% (2004)

67% (1998)

62% (2000)

64% (2000)

61% (2001)

66% (1992)

63% (1994)

58% (1995)

57% (1998)

69% (1990)

45% (1996)

0% (1995)

85% (1992)

60% (2001)

10% (1999)

0% (2008)