75% (1985)

68% (2007)

0% (1993)

64% (1980)

50% (1996)

59% (2006)

15% (1996)

60% (1997)

65% (1997)

75% (1992)

70% (1992)

0% (1970)

0% (1993)

0% (1999)

78% (2009)

60% (1993)

50% (2011)

40% (1985)

0% (1991)

0% (1985)