66% (2011)

82% (2000)

70% (2001)

58% (2012)

70% (2005)

77% (1998)

72% (2004)

55% (2013)

70% (1992)

64% (2010)

68% (2001)

68% (1999)

74% (1995)

63% (2014)

77% (1988)

56% (2017)

58% (2009)

62% (2014)

55% (2008)

53% (1987)