63% (2017)

74% (1990)

79% (1999)

79% (1996)

63% (1977)

79% (2002)

60% (1986)

85% (2018)

30% (2009)

41% (1985)

82% (2006)

52% (2005)

61% (2004)

54% (1997)

76% (2013)

60% (2007)

81% (2005)

90% (2008)

76% (2003)

85% (2016)