62% (1970)

44% (2001)

46% (2005)

0% (1980)

72% (1956)

72% (1994)

80% (2011)

76% (2015)

85% (1993)

41% (2009)

0% (2004)

60% (2007)

10% (2000)

0% (2007)

78% (1996)

35% (1996)

73% (2005)

69% (1971)

85% (2004)

60% (2009)