25% (1977)

65% (2011)

50% (2005)

30% (1991)

52% (1982)

0% (1981)

63% (1997)

0% (1981)

60% (1953)

60% (1951)

60% (1953)

35% (2007)

68% (2009)

55% (2001)

0% (1970)

56% (1930)

58% (2013)

41% (1895)

65% (1922)

70% (2000)