52% (2007)

61% (2009)

40% (2001)

66% (2007)

54% (1998)

65% (2004)

51% (2009)

54% (2005)

59% (2009)

65% (2006)

46% (2004)

40% (2004)

70% (2004)

80% (2011)

40% (2006)

70% (2007)

60% (2013)

45% (2005)

48% (2007)

20% (2008)