55% (1978)

84% (2008)

84% (2010)

68% (1981)

82% (2023)

40% (2007)

82% (2018)

82% (2018)

82% (2011)

70% (2005)

34% (1992)

78% (2014)

64% (2006)

41% (1972)

68% (1957)

89% (2008)

69% (1996)

76% (2005)

67% (2000)

50% (1995)