68% (1993)

80% (1986)

76% (2001)

72% (2002)

72% (1985)

83% (2011)

67% (2009)

79% (2002)

79% (2006)

67% (2010)

67% (1968)

51% (1998)

71% (2014)

83% (2009)

73% (1994)

69% (1985)

83% (2015)

79% (2021)

76% (2016)

72% (2016)