70% (2007)

69% (2009)

67% (1997)

78% (1964)

45% (2009)

62% (2010)

61% (2004)

72% (1986)

55% (1987)

65% (1956)

70% (1986)

68% (1954)

0% (1965)

70% (1987)

54% (1983)

80% (1994)

75% (1992)

0% (1986)

0% (1966)

75% (1972)