64% (2008)

61% (2014)

68% (1998)

69% (2007)

59% (2000)

55% (2003)

52% (2001)

52% (2014)

59% (2006)

41% (2007)

65% (1996)

74% (1984)

69% (2001)

63% (2021)

48% (1986)

62% (1981)

65% (1987)

70% (1970)

71% (1977)

59% (2007)