33% (1998)

59% (2011)

62% (2002)

33% (1999)

52% (2005)

53% (1999)

51% (2010)

52% (2010)

68% (2005)

48% (2004)

38% (1997)

55% (2015)

66% (2003)

65% (2002)

67% (1999)

60% (2001)

50% (2009)