70% (2012)

30% (2002)

60% (1974)

68% (1985)

40% (2001)

0% (1984)

48% (1982)

60% (1995)

85% (1997)

67% (1975)

64% (1985)

30% (2001)

0% (2001)

55% (2013)

54% (1967)

59% (2013)

0% (1988)

63% (2006)

62% (1981)

52% (2008)