46% (1997)

56% (1993)

43% (1995)

56% (1994)

49% (2000)

59% (1995)

74% (1992)

46% (1997)

56% (1996)

53% (1999)

66% (1994)

49% (1995)

53% (1991)

57% (1994)

64% (1997)

53% (1992)

52% (1993)

48% (1996)

44% (1999)

40% (1993)