53% (1986)

54% (1987)

72% (2013)

48% (1986)

63% (1988)

65% (1996)

64% (2002)

64% (2013)

56% (2003)

58% (1989)

66% (1989)

67% (1989)

72% (2011)

43% (1986)

62% (1996)

71% (1985)

59% (2002)

51% (1987)

65% (2000)

77% (1992)