65% (1997)

77% (1996)

65% (1995)

61% (1998)

66% (1996)

59% (1996)

61% (1997)

53% (1997)

62% (1996)

53% (1996)

60% (1997)

65% (1997)

69% (1996)

61% (1996)

52% (1997)

55% (1996)

62% (1995)

69% (1996)

59% (1996)

64% (1995)