64% (2008)

59% (2007)

60% (2007)

57% (2010)

53% (2006)

52% (2005)

42% (1999)

0% (1997)

60% (2006)

68% (1997)

65% (2006)

55% (1985)

10% (1997)

0% (2006)

100% (1992)

45% (2004)

50% (1987)

0% (2008)

70% (2005)

0% (2007)