59% (1990)

53% (2011)

61% (2015)

69% (2002)

60% (1996)

54% (1957)

52% (2010)

49% (1996)

60% (1950)

57% (1999)

64% (1978)

80% (2012)

65% (2013)

62% (1966)

65% (1938)

50% (2007)

65% (2021)

56% (2004)

52% (2003)

56% (2022)