50% (2003)

72% (2014)

20% (1997)

40% (2005)

50% (2008)

42% (2002)

30% (1999)

20% (2011)

0% (2011)

20% (1998)

20% (2000)

45% (2007)

40% (1996)

0% (2006)

20% (2002)

70% (1995)

0% (2002)

0% (2004)

0% (2007)

20% (1993)