56% (2003)

61% (2007)

45% (2008)

79% (2001)

66% (2004)

66% (2002)

57% (1998)

47% (2008)

52% (1998)

70% (1999)

54% (2006)

47% (2003)

60% (2003)

57% (2005)

51% (2005)

60% (2002)

60% (2005)

48% (2005)

50% (2007)

0% (2005)