100% (2007)

50% (1976)

65% (1993)

49% (2004)

65% (2006)

30% (1997)

65% (1993)

0% (2004)

0% (1983)

0% (1980)

80% (2005)

60% (1990)

70% (2006)

0% (1989)

70% (2005)

0% (2004)

0% (1989)

65% (1990)

0% (1981)

60% (2007)