0% (1964)

40% (2005)

0% (1996)

0% (2010)

0% (2013)

40% (2009)

0% (2012)

72% (2011)

20% (2002)

73% (1996)

0% (2000)

20% (2008)

0% (1990)

55% (1980)

70% (2014)

50% (2001)

0% (1965)

20% (1997)

64% (2002)

68% (1989)