57% (1985)

64% (1992)

63% (1987)

57% (1998)

60% (1994)

48% (1998)

61% (1993)

55% (1984)

46% (2007)

58% (1996)

83% (2013)

56% (2014)

64% (1991)

55% (2002)

53% (1998)

49% (1986)

56% (1997)

63% (1990)

58% (2015)

55% (1985)