76% (2015)

83% (2014)

81% (2006)

80% (1996)

71% (2005)

83% (2019)

76% (2015)

60% (2004)

0% (1991)

0% (1990)

0% (1970)

82% (2012)

90% (1998)

61% (1997)

67% (1966)

68% (2005)

70% (2010)

77% (1992)

32% (2000)

79% (2016)