68% (1978)

38% (1997)

40% (2007)

70% (2008)

62% (1991)

68% (1992)

43% (1998)

52% (1960)

61% (1985)

57% (2014)

60% (2001)

54% (2019)

28% (1997)

50% (2016)

50% (2000)

79% (2016)

74% (1990)

72% (1966)

58% (1992)

84% (2004)