61% (2011)

70% (2012)

68% (2015)

63% (2007)

62% (2015)

60% (2003)

90% (1997)

0% (1989)

67% (2010)

20% (2015)

62% (2012)

58% (2013)

0% (1992)

0% (1985)

90% (2004)

0% (2000)

0% (2010)

0% (2002)

60% (2001)

52% (2005)