69% (2020)

14% (2007)

70% (2001)

65% (1977)

45% (1985)

34% (1998)

74% (1999)

72% (2012)

65% (1992)

63% (1962)

57% (2011)

60% (1974)

60% (1975)

25% (2012)

60% (2010)

30% (1998)

60% (2011)

97% (1987)

50% (2008)

40% (2006)