70% (2014)

66% (1997)

53% (2011)

50% (1977)

47% (1970)

70% (2016)

80% (2015)

46% (1969)

50% (2013)

74% (2008)

73% (2000)

54% (1977)

70% (2002)

60% (2018)

34% (1960)

74% (2013)

54% (2017)

31% (1972)

68% (2007)

43% (2003)