72% (1986)

56% (2015)

62% (1992)

52% (2001)

58% (1988)

0% (2011)

35% (1998)

47% (1999)

72% (1997)

0% (2012)

0% (2002)

0% (2013)

0% (2011)

0% (2006)

80% (1970)