73% (2007)

66% (2010)

49% (2009)

60% (1999)

80% (2009)

58% (2012)

20% (2008)

55% (2007)

100% (2015)

75% (2012)

48% (1992)

60% (2015)

0% (2003)

0% (2005)

51% (1994)

47% (2004)