60% (1998)

62% (2016)

72% (2014)

75% (1992)

70% (1988)

47% (1994)

68% (1969)

71% (1980)

57% (2009)

65% (1949)

62% (1993)

63% (1994)

65% (1995)

52% (1977)

49% (2000)

73% (1973)

67% (2013)

68% (2014)

73% (1984)

74% (1983)