50% (1990)

81% (1990)

68% (2003)

68% (1997)

70% (2004)

76% (1992)

77% (2005)

88% (2000)

78% (2007)

0% (1988)

0% (1987)

0% (1988)

74% (2009)

87% (2002)

10% (1987)

78% (1987)

78% (1997)

0% (2009)

95% (2000)

69% (2016)