10% (1995)

36% (2003)

40% (1999)

20% (1992)

60% (1996)

0% (1985)

20% (1985)

35% (2007)

0% (1988)

40% (2004)

60% (1999)

10% (2001)

53% (1999)

60% (1999)

20% (1983)

0% (1993)

60% (1987)

0% (1985)

0% (1993)

66% (1995)