63% (1999)

63% (2001)

45% (2013)

57% (2002)

66% (1989)

65% (2013)

50% (2014)

72% (2006)

53% (2002)

47% (2002)

67% (2013)

42% (2005)

46% (2005)

35% (2006)

52% (2007)

58% (1999)

58% (2008)

51% (2010)

0% (1986)

30% (2003)