72% (1998)

61% (2004)

68% (2000)

68% (2010)

56% (2002)

50% (2009)

63% (2002)

65% (2006)

69% (2012)

59% (1997)

68% (2003)

50% (1998)

85% (2013)

0% (1997)

55% (2014)

42% (2015)

63% (1994)

0% (2004)

57% (1994)

0% (2008)