65% (2024)

62% (2015)

62% (2020)

63% (2018)

63% (2023)

58% (2022)

74% (2009)

67% (2015)

58% (2023)

63% (2016)

65% (2014)

67% (2019)

70% (2011)

71% (2023)

61% (2010)

59% (2019)

59% (2011)

41% (2005)

49% (2013)

0% (1970)