70% (2007)

69% (2009)

78% (1964)

67% (1997)

70% (1986)

45% (2009)

68% (1954)

65% (1985)

69% (1966)

63% (1984)

55% (1987)

0% (1980)

61% (2004)

61% (2010)

0% (1964)

60% (1987)

67% (1989)

75% (1992)

0% (1985)

53% (1983)