53% (2006)

57% (2010)

64% (2008)

52% (2005)

59% (2007)

60% (2006)

60% (2007)

70% (2005)

50% (1987)

68% (1997)

65% (2006)

45% (2004)

42% (1999)

100% (1992)

0% (2006)

0% (1981)

0% (2012)

0% (2008)

10% (1997)

0% (2007)