58% (2006)

56% (2003)

62% (2005)

41% (2003)

42% (1999)

59% (1999)

40% (2004)

50% (2003)

60% (2004)

55% (2002)

67% (2005)

40% (1998)

46% (2001)

44% (2005)

57% (2002)

15% (2003)