68% (1993)

63% (2000)

60% (2004)

58% (2000)

59% (2003)

58% (1994)

45% (1992)

69% (1997)

53% (1993)

50% (1997)

0% (1998)

68% (2001)

52% (1991)

50% (1992)

80% (1995)

55% (2002)

60% (1992)

0% (1998)

0% (1991)

45% (1991)