72% (2003)

65% (2002)

78% (2000)

61% (2001)

66% (2003)

56% (2002)

59% (2003)

54% (1999)

61% (2002)

65% (2001)

60% (2002)

51% (2001)

80% (2002)

50% (2001)

65% (1999)

57% (2003)

63% (2003)

47% (2001)

0% (2003)

10% (1998)