40% (1999)

36% (2003)

20% (1983)

35% (2007)

10% (1995)

10% (1995)

20% (1985)

40% (1987)

40% (2004)

60% (1996)

60% (1999)

0% (1983)

20% (1998)

20% (1991)

53% (1999)

100% (1992)

0% (1987)

60% (1999)

0% (1993)

0% (1987)