29% (2002)

78% (1989)

70% (1976)

63% (2003)

65% (2002)

60% (2001)

50% (2002)

90% (2002)

63% (2000)

60% (2004)

40% (1999)

56% (2000)

0% (2001)

70% (2002)

72% (2004)

68% (1977)

77% (2001)

64% (2001)

69% (1998)

40% (1997)