56% (2006)

57% (2007)

54% (2000)

48% (2005)

36% (2011)

53% (2000)

46% (2005)

50% (2002)

62% (2005)

65% (2007)

40% (2001)

50% (2003)

52% (2008)

59% (2000)

50% (2006)

48% (2005)

53% (2003)

50% (2005)

47% (2009)

64% (1997)