61% (2005)

67% (1970)

60% (1969)

61% (1992)

66% (1970)

67% (1944)

62% (1982)

48% (2002)

61% (1986)

51% (1974)

70% (1972)

76% (1937)

74% (1939)

58% (1950)

74% (1940)

60% (1973)

64% (2002)

63% (1960)

70% (1948)

59% (1996)