44% (2000)

72% (2003)

62% (1996)

53% (2001)

68% (2003)

52% (1994)

59% (2004)

62% (1998)

38% (2002)

68% (1996)

65% (2003)

54% (1998)

58% (1997)

62% (2000)

60% (1997)

48% (2002)

57% (1997)

36% (1995)

46% (1994)

34% (1994)