69% (2009)

60% (1986)

35% (1995)

0% (1997)

59% (2003)

82% (2015)

27% (1999)

60% (1994)

0% (1985)

0% (1969)

0% (2012)

65% (1974)

54% (1989)

60% (2007)

60% (2010)

0% (2014)

70% (1974)

62% (2009)

57% (2008)

73% (2015)