78% (1987)

70% (1969)

62% (2009)

73% (1996)

59% (2003)

59% (1986)

69% (1981)

69% (2007)

71% (1986)

71% (2023)

69% (2022)

75% (1979)

61% (2013)

59% (2006)

79% (1953)

62% (2008)

69% (1993)

68% (2005)

72% (1998)

63% (2002)