72% (2003)

61% (1996)

68% (2003)

61% (1998)

68% (1996)

53% (1998)

56% (1997)

62% (2000)

52% (1994)

60% (1997)

37% (2002)

43% (2000)

36% (1995)

38% (1994)

58% (1997)

42% (1997)

30% (1997)

45% (1994)

65% (2003)

60% (2004)