65% (2024)

63% (2015)

74% (2009)

62% (2020)

59% (2019)

67% (2019)

63% (2018)

58% (2023)

58% (2022)

63% (2016)

65% (2014)

61% (2010)

68% (2015)

63% (2023)

70% (2011)

59% (2011)

71% (2023)

61% (2010)

41% (2005)

0% (1970)