76% (1993)

73% (1995)

59% (1995)

62% (1998)

57% (1994)

60% (1995)

45% (1993)

60% (1992)

62% (1996)

63% (1996)

49% (1997)

61% (1994)

69% (1995)

40% (1998)

0% (1996)

76% (2006)