58% (2012)

66% (2011)

81% (2000)

70% (1992)

70% (2001)

71% (2005)

57% (2009)

72% (2004)

56% (2013)

77% (1998)

68% (2001)

74% (1995)

64% (2010)

68% (1999)

77% (1988)

59% (1994)

62% (2014)

63% (1987)

56% (2017)

55% (2008)