52% (2011)

57% (2000)

0% (2009)

40% (1961)

0% (1965)

72% (1993)

50% (1998)

57% (1992)

62% (1960)

50% (2010)

60% (1966)

0% (1974)

50% (1987)

0% (1965)

62% (1994)

65% (1989)

60% (2004)

0% (1978)

0% (1989)

50% (1992)