52% (2000)

51% (2012)

64% (2009)

48% (2001)

45% (2004)

37% (2002)

61% (2011)

43% (2002)

52% (2003)

46% (2001)

55% (2002)

42% (2003)

59% (2007)

50% (2004)

36% (2000)

35% (2003)

58% (2011)

56% (2006)

44% (2002)

48% (1999)