67% (2011)

73% (1995)

70% (2000)

60% (2009)

55% (2000)

51% (2011)

0% (1999)

30% (2005)

90% (2003)

25% (1999)

10% (1995)

0% (2005)

46% (2013)

0% (2007)

53% (2003)

61% (2002)

0% (1998)

0% (1994)

74% (2009)

56% (1993)