77% (2016)

77% (2013)

77% (2019)

73% (2015)

72% (2015)

54% (2011)

58% (2004)

63% (2015)

63% (2014)

53% (1999)

62% (2016)

0% (2005)

50% (1981)

40% (2007)

50% (1987)

0% (2012)

66% (1979)

80% (2007)

32% (2004)

31% (1993)