38% (1999)

50% (2012)

38% (2005)

47% (1997)

20% (1999)

53% (2005)

35% (2006)

0% (1970)

40% (2007)

65% (2001)

40% (2004)

55% (1999)

35% (1987)

0% (1997)

70% (1993)

20% (1996)

0% (1993)

60% (1995)

0% (1999)

0% (2011)