77% (2012)

0% (2001)

80% (2008)

20% (2001)

0% (1992)

57% (1983)

61% (1955)

0% (1967)

0% (2006)

75% (2003)

10% (2003)

0% (1970)

50% (1982)

70% (1980)

88% (2010)

30% (2001)

70% (2006)

0% (2008)

50% (1980)

52% (1987)