67% (1990)

70% (1949)

58% (2008)

70% (1955)

72% (2004)

67% (2004)

57% (2003)

63% (1989)

62% (2019)

74% (2019)

50% (2018)

62% (2017)

55% (2017)

70% (2016)

72% (2016)

46% (2015)

62% (2015)

54% (2015)

56% (2013)

59% (2012)