52% (1997)

67% (2008)

74% (2007)

67% (2005)

65% (2006)

64% (2011)

65% (2005)

58% (2009)

74% (2014)

51% (1999)

60% (2002)

0% (1970)

55% (2005)

57% (1999)

0% (1970)

54% (1999)

100% (2016)

0% (1970)

30% (2009)