77% (2020)

65% (2017)

70% (2016)

62% (2010)

55% (2013)

67% (2021)

74% (2013)

70% (2007)

60% (2020)

68% (2013)

62% (2003)

58% (2010)

63% (2001)

69% (2005)

69% (2006)

61% (2007)

61% (2001)

0% (1970)

61% (2003)

61% (2006)