56% (2004)

65% (1989)

58% (1983)

57% (2011)

65% (1985)

57% (1973)

84% (2005)

65% (1995)

60% (2006)

61% (1983)

58% (2006)

82% (2005)

52% (1974)

48% (1977)

65% (1994)

67% (1977)

71% (2006)

59% (1974)

53% (1985)

72% (1986)