63% (1996)

70% (1983)

79% (1991)

65% (1984)

56% (2016)

76% (1995)

68% (1987)

67% (2009)

66% (2004)

67% (1969)

51% (2011)

62% (1982)

53% (2015)

61% (2010)

41% (2013)

64% (1983)

59% (2001)

63% (1992)

58% (1999)

49% (1997)