20% (1998)

47% (2005)

20% (1999)

20% (1979)

37% (2001)

20% (1992)

35% (1978)

53% (2003)

0% (1990)

35% (1980)

20% (1978)

0% (1977)

50% (1993)

53% (1970)

35% (2001)

20% (1987)

20% (1976)

0% (1985)

20% (1979)

40% (2002)