82% (1987)

0% (2007)

60% (2005)

92% (2006)

0% (2009)

40% (2005)

90% (2015)

70% (1991)

45% (2005)

95% (2002)

60% (2004)

100% (2007)

30% (2007)

70% (1983)

60% (2003)

0% (2007)

20% (2001)

42% (2000)

0% (2005)

0% (2004)