69% (1993)

61% (2004)

62% (2000)

60% (2003)

45% (1991)

60% (2000)

68% (1997)

58% (1994)

55% (2002)

50% (1997)

55% (1993)

0% (2002)

75% (2004)

52% (1991)

60% (1992)

47% (1992)

68% (2001)

20% (1995)

59% (2002)

70% (1996)