60% (2003)

70% (2009)

58% (2006)

73% (2006)

64% (2007)

77% (2012)

59% (2001)

73% (2001)

49% (2004)

51% (2004)

40% (2012)

48% (2000)

40% (1999)

0% (2004)

0% (2003)