42% (2010)

57% (1995)

34% (2006)

46% (2004)

42% (2008)

55% (2001)

52% (2007)

43% (1999)

49% (2006)

47% (2003)

38% (1996)

54% (2001)

36% (2011)

40% (2003)

38% (2004)

45% (2001)

56% (2005)

41% (2000)

100% (2007)

50% (2010)