0% (1998)

58% (2006)

60% (1990)

50% (1986)

0% (2006)

100% (2000)

71% (2006)

30% (2007)

50% (1994)

65% (2001)

0% (1991)

57% (1990)

60% (1989)

50% (1991)

0% (1995)

55% (1993)

0% (2007)

20% (1999)

50% (1991)

40% (1997)