60% (1975)

46% (2005)

67% (1951)

63% (1959)

72% (1991)

45% (1930)

64% (2021)

55% (2015)

57% (1954)

62% (2006)

55% (2010)

56% (2003)

60% (2008)

60% (2001)

62% (2014)

67% (1999)

65% (1949)

66% (1944)

67% (1965)

65% (2012)