64% (2005)

47% (2005)

38% (1998)

40% (2004)

60% (1998)

56% (1998)

42% (2004)

54% (2005)

63% (2000)

56% (2008)

57% (2005)

39% (2002)

55% (2008)

64% (1997)

55% (2007)

52% (2009)

52% (2004)

56% (1996)

52% (2000)

38% (1998)