34% (1997)

40% (1996)

52% (1970)

64% (1966)

43% (2006)

56% (2018)

68% (1966)

59% (2004)

57% (1976)

26% (1989)

60% (2008)

50% (2010)

54% (2017)

38% (1989)

62% (1972)

55% (2003)

68% (1943)

73% (2017)

63% (2011)

52% (2001)