0% (1957)

79% (1988)

60% (1989)

60% (1963)

38% (2008)

0% (2000)

0% (2013)

61% (1970)

63% (1988)

0% (1963)

61% (2008)

80% (2012)

88% (1996)

62% (1980)

85% (1970)

0% (1983)

100% (2006)

56% (1993)

73% (2011)

57% (2015)