40% (1992)

20% (1999)

78% (2007)

35% (2000)

72% (1994)

0% (2011)

84% (1971)

61% (2005)

60% (1974)

46% (2008)

62% (2001)

44% (1981)

0% (2005)

60% (2006)

60% (2000)

65% (2002)

64% (1971)

0% (2007)

0% (1980)

47% (1987)