68% (2001)

61% (2002)

53% (2005)

43% (2004)

63% (2008)

61% (1999)

52% (2010)

46% (1998)

69% (2004)

56% (2007)

58% (2012)

50% (1995)

0% (2002)

57% (2009)

10% (2004)

67% (2014)

0% (2009)