0% (1979)

0% (1979)

80% (1998)

0% (2006)

60% (2007)

64% (2005)

35% (2004)

45% (2000)

40% (1980)

50% (1998)

0% (1991)

0% (1980)

0% (2006)

50% (1991)

85% (1977)

0% (1999)

55% (2002)

53% (1982)

0% (1989)

0% (1988)