74% (1986)

63% (1965)

71% (1966)

69% (1990)

58% (1996)

59% (1999)

66% (1970)

57% (2019)

62% (2018)

60% (1996)

62% (1999)

62% (2002)

49% (2000)

68% (2001)

61% (1995)

62% (2005)

72% (1992)

71% (1994)

64% (2009)

65% (2012)