63% (1999)

74% (1991)

0% (1995)

78% (2006)

47% (1979)

80% (2001)

88% (2005)

100% (1970)

90% (2009)

64% (1987)

78% (2004)

60% (1996)

78% (1995)

90% (2000)

60% (1993)

70% (1997)

60% (1997)

78% (2001)

0% (2000)

64% (1997)