64% (1999)

51% (2000)

65% (2001)

55% (1997)

64% (2000)

45% (2002)

48% (2001)

53% (2000)

70% (2001)

70% (1995)

50% (2002)

30% (1998)

67% (2000)

47% (1996)

57% (1999)

45% (1996)

41% (2001)

54% (1997)

85% (2006)

33% (1998)