77% (2016)

78% (2013)

79% (2019)

72% (2015)

54% (2011)

62% (2014)

64% (2015)

74% (2015)

59% (2004)

53% (1999)

62% (2016)

31% (1993)

32% (2004)

66% (1979)

0% (2005)

80% (2007)

100% (2006)

50% (1990)

84% (2020)

0% (1990)