45% (1999)

41% (2003)

64% (1997)

45% (1998)

71% (2002)

53% (1996)

70% (2006)

61% (1999)

44% (2002)

56% (1985)

100% (2002)

52% (1987)

72% (1990)

74% (1999)

75% (1987)

72% (2003)

67% (1999)

72% (1987)

63% (2002)

62% (2003)