75% (1964)

66% (1964)

75% (2005)

77% (2009)

43% (2010)

58% (2001)

85% (2011)

41% (2000)

53% (2002)

72% (2007)

58% (2005)

64% (2006)

56% (1978)

35% (1987)

70% (1970)

0% (1961)

76% (1997)

54% (1960)

49% (2001)

79% (1963)