59% (2000)

68% (1995)

70% (1990)

54% (1999)

74% (1995)

63% (1987)

69% (1987)

70% (1990)

52% (1998)

51% (2002)

60% (1998)

39% (1994)

64% (2001)

62% (1991)

60% (1999)

59% (1989)

20% (1999)

0% (1994)

0% (2001)

43% (1998)