64% (1998)

60% (1993)

47% (1990)

78% (1966)

65% (2011)

57% (1940)

40% (1999)

59% (2006)

76% (2018)

62% (2017)

67% (2008)

55% (1982)

58% (2011)

65% (2014)

62% (2014)

39% (2010)

55% (2005)

53% (2005)

50% (2015)

70% (2003)