51% (2012)

52% (2000)

61% (2011)

37% (2001)

64% (2009)

52% (2003)

47% (2001)

46% (2004)

56% (1999)

55% (2002)

48% (2001)

47% (2001)

58% (2011)

35% (2003)

52% (2002)

46% (1997)

55% (2005)

49% (2004)

43% (2002)

38% (2002)