77% (2003)

78% (2006)

72% (1998)

54% (2002)

30% (2008)

47% (2015)

70% (2001)

43% (2005)

0% (2000)

0% (1995)

63% (2002)

0% (1999)

66% (1999)

0% (2010)

65% (1998)

0% (1996)

30% (2005)

0% (1994)