60% (1992)

35% (1988)

60% (1990)

70% (2009)

60% (2000)

52% (2013)

60% (1970)

0% (1998)

70% (2007)

20% (2011)

70% (2003)

0% (2006)

0% (2008)

0% (2010)

33% (2004)

20% (2009)

68% (1999)

0% (2006)

43% (2014)

90% (1994)