68% (2003)

70% (2004)

50% (1990)

81% (1990)

0% (1988)

68% (1997)

0% (1990)

78% (1997)

70% (2005)

88% (2000)

69% (2016)

0% (2009)

54% (1987)

0% (1988)

78% (1987)

75% (2005)

0% (1987)

0% (1989)

76% (1992)

0% (1988)