65% (2001)

70% (2002)

54% (2005)

68% (2005)

60% (2003)

61% (2004)

63% (2003)

57% (2002)

67% (2000)

48% (2003)

55% (2000)

54% (2002)

56% (2002)

57% (2005)

45% (2005)

46% (2000)

50% (2004)

45% (2000)

56% (2003)

46% (1999)