52% (2002)

55% (2005)

62% (2009)

20% (2003)

66% (2007)

35% (2008)

48% (2002)

55% (2011)

55% (2013)

52% (2005)

60% (2005)

42% (2008)

60% (1998)

62% (2004)

50% (2004)

0% (1970)