78% (2021)

61% (2002)

85% (1988)

78% (2000)

71% (2012)

100% (2011)

72% (1998)

0% (2005)

79% (2008)

0% (2002)

84% (2001)

61% (2002)

0% (2006)

0% (2003)

40% (2012)

0% (1988)

20% (2005)

73% (1993)

78% (2011)

68% (2004)