69% (1993)

63% (2000)

58% (1994)

57% (2000)

46% (1991)

68% (1997)

68% (2001)

38% (1992)

61% (2004)

53% (1993)

55% (1993)

80% (1995)

55% (2002)

70% (1996)

55% (1994)

50% (1997)

75% (1992)

67% (2000)

52% (1991)

0% (1996)