71% (2006)

70% (2021)

57% (1999)

60% (2007)

74% (2003)

80% (2000)

70% (2005)

84% (2014)

61% (2008)

80% (1977)

71% (2000)

72% (2007)

71% (2008)

76% (2012)

70% (2017)

80% (1990)

59% (2013)

73% (2004)

70% (2001)

65% (2008)