58% (2006)

18% (2005)

56% (1998)

39% (2002)

55% (2007)

55% (2005)

39% (2002)

60% (1998)

51% (2008)

40% (2004)

40% (2004)

23% (2009)

40% (2001)

63% (1999)

57% (1996)

58% (2004)

40% (2011)

37% (2002)

35% (1999)

64% (2006)