56% (1993)

59% (1995)

56% (1994)

74% (1992)

54% (1992)

48% (2000)

47% (1997)

52% (1993)

53% (1991)

43% (1996)

45% (1997)

63% (1997)

44% (1999)

40% (1993)

52% (1999)

56% (1996)

36% (1995)

49% (1995)

66% (1994)

53% (1999)