57% (1988)

53% (1998)

60% (2011)

64% (1995)

57% (2014)

62% (1986)

62% (1984)

49% (1998)

64% (1994)

50% (1993)

55% (1984)

66% (1985)

58% (2015)

65% (1988)

45% (2007)

61% (1989)

60% (1998)

53% (1995)

58% (1986)

39% (1999)