72% (2004)

53% (2013)

60% (1993)

70% (1950)

50% (1986)

39% (2014)

74% (2002)

40% (2011)

55% (1967)

66% (2009)

50% (1969)

41% (2006)

28% (2017)

67% (1951)

49% (2005)

50% (1962)

55% (1991)

54% (2004)

65% (1955)

61% (1966)