48% (2011)

48% (1998)

50% (2002)

59% (1994)

52% (2009)

48% (2005)

65% (1988)

59% (1996)

34% (1999)

58% (2000)

30% (1994)

53% (2002)

64% (2006)

48% (2010)

67% (2005)

65% (2002)

41% (2000)

59% (1988)

57% (2013)

37% (1997)