78% (2005)

83% (1990)

67% (2004)

64% (2005)

68% (2001)

69% (1994)

67% (2000)

69% (2002)

80% (1988)

70% (2006)

80% (2003)

0% (1991)

66% (2002)

68% (2005)

75% (2004)

0% (1985)

0% (1992)

60% (1990)

0% (2006)

65% (1992)