64% (2015)

61% (2019)

60% (2009)

63% (2003)

57% (2018)

60% (2005)

70% (2011)

58% (2006)

67% (2015)

53% (2012)

59% (2007)

66% (2011)

70% (2001)

60% (2006)

54% (2010)

33% (2008)

45% (2007)

65% (2016)

0% (2010)

0% (1970)