82% (2011)

80% (2002)

79% (2006)

83% (2009)

76% (2001)

67% (1993)

79% (2021)

67% (2010)

83% (2015)

77% (1987)

66% (1992)

76% (2016)

75% (2007)

60% (1991)

75% (1997)

72% (2016)

66% (1968)

75% (2017)

76% (1984)

50% (1998)