0% (2007)

50% (1995)

0% (2004)

30% (2002)

0% (1996)

20% (2009)

40% (2001)

47% (2007)

70% (2001)

0% (1995)

20% (2007)

60% (2005)

70% (1995)

90% (2006)

0% (2006)

0% (1991)

70% (1994)

70% (2008)

65% (2002)

82% (1970)