79% (2007)

58% (1968)

52% (1982)

55% (2009)

49% (1973)

58% (2011)

68% (2020)

57% (1975)

57% (2015)

66% (2007)

60% (1988)

50% (2019)

64% (2005)

66% (1967)

41% (2011)

53% (1973)

63% (1991)

57% (2019)

38% (1972)

46% (1967)