85% (1999)

79% (2007)

78% (1987)

55% (2008)

62% (1993)

69% (1997)

66% (1998)

64% (2001)

62% (2018)

57% (2016)

59% (1999)

65% (2004)

57% (2006)

65% (2010)

72% (2005)

64% (2012)

50% (2000)