56% (1994)

49% (2000)

56% (1993)

59% (1995)

74% (1992)

43% (1995)

46% (1997)

46% (1997)

66% (1994)

53% (1991)

53% (1999)

53% (1992)

56% (1996)

48% (1996)

44% (1999)

40% (1993)

52% (1993)

62% (1995)

63% (1997)

51% (1996)