55% (1999)

48% (2004)

62% (2001)

72% (1994)

58% (2007)

74% (1987)

69% (1996)

58% (2002)

63% (1992)

70% (2007)

72% (1992)

64% (1985)

61% (1987)

61% (2007)

61% (2019)

65% (2008)

64% (1987)

66% (2001)

64% (1995)

48% (2001)