68% (1979)

66% (1996)

58% (1978)

60% (1948)

67% (1998)

55% (2000)

57% (1988)

59% (1982)

70% (1972)

59% (1999)

65% (2015)

72% (1958)

72% (1937)

57% (1982)

64% (1943)

67% (1985)

60% (1982)

56% (1983)

66% (1969)

66% (1977)