50% (1996)

58% (2001)

65% (1997)

64% (1980)

0% (1993)

68% (2007)

60% (1997)

60% (1993)

0% (1970)

59% (2006)

0% (1993)

0% (1974)

70% (1992)

47% (2011)

70% (2009)

65% (1988)

0% (1999)

67% (2007)

40% (1985)

0% (1991)