59% (2006)

56% (2003)

63% (2005)

40% (1998)

66% (2005)

42% (2003)

43% (1999)

37% (2004)

58% (2002)

61% (1999)

51% (2003)

60% (2002)

52% (2001)

56% (2004)

48% (2005)

17% (2003)