71% (2009)

63% (1980)

54% (1981)

62% (2010)

58% (2023)

70% (2013)

75% (1964)

66% (1999)

77% (1998)

63% (2016)

53% (2008)

66% (2003)

57% (2015)

77% (1988)

52% (2007)

74% (1995)

28% (1980)

68% (1960)

70% (1986)

68% (1990)