69% (1999)

62% (2014)

74% (2011)

53% (1980)

68% (2019)

59% (1973)

62% (1976)

58% (1976)

74% (2005)

58% (2001)

55% (1986)

70% (1977)

20% (1982)

55% (2008)

60% (1973)

65% (1971)

50% (1973)

46% (1983)

57% (1995)

55% (1980)