57% (2003)

62% (2005)

58% (2006)

42% (2003)

43% (1999)

51% (2003)

66% (2005)

52% (2001)

40% (1998)

58% (2002)

37% (2004)

61% (1999)

56% (2004)

48% (2005)

60% (2002)

17% (2003)