54% (2004)

65% (2007)

60% (2011)

39% (2004)

56% (2005)

64% (2006)

40% (2007)

62% (2008)

51% (2005)

48% (2007)

45% (2001)

62% (2009)

52% (2004)

58% (1996)

64% (2001)

53% (2003)

45% (2007)

50% (1999)

72% (2006)

57% (2007)