40% (1999)

0% (1987)

0% (2006)

36% (2003)

25% (2005)

60% (1996)

57% (2004)

20% (1983)

35% (2007)

40% (1987)

10% (1995)

0% (1988)

0% (1988)

85% (1986)

10% (1995)

40% (2004)

100% (1992)

0% (1995)

0% (1983)

0% (1994)