69% (2020)

64% (2017)

81% (2015)

65% (1992)

61% (1991)

25% (1993)

72% (1956)

18% (2007)

73% (2002)

65% (1987)

60% (1975)

97% (1987)

52% (1992)

64% (2001)

61% (2011)

70% (2001)

67% (1966)

53% (1996)

58% (1976)

72% (2012)