58% (2015)

61% (1982)

58% (2007)

62% (2003)

63% (1998)

66% (1987)

70% (1984)

58% (1987)

61% (1982)

45% (2002)

57% (2009)

58% (1981)

53% (1983)

67% (2012)

58% (1987)

61% (1987)

57% (1985)

68% (1992)

47% (1987)

50% (1986)