62% (1984)

66% (1997)

55% (1986)

52% (1989)

20% (1984)

90% (2000)

59% (1988)

82% (2012)

80% (2005)

58% (1971)

76% (2004)

0% (1996)

65% (2006)

60% (2007)

80% (2002)

0% (2009)

0% (2005)