73% (2000)

80% (2022)

72% (2023)

64% (2005)

77% (2021)

77% (2013)

36% (2022)

61% (2021)

67% (2022)

72% (2019)

61% (2018)

72% (2016)

61% (2022)

35% (2023)

65% (2009)

38% (2007)

68% (2021)

72% (2001)

51% (2009)

0% (1970)