59% (2005)

77% (2006)

45% (2011)

81% (2016)

65% (2003)

77% (2002)

49% (2009)

74% (2007)

71% (2020)

81% (2004)

65% (2001)

67% (2007)

70% (2009)

70% (2021)

100% (1988)

52% (2013)

0% (1970)