0% (1998)

70% (2010)

72% (1994)

46% (2008)

0% (2011)

0% (1969)

0% (2007)

61% (2005)

30% (2009)

35% (2000)

84% (1971)

65% (2002)

60% (1974)

50% (1994)

47% (1987)

60% (2000)

44% (1981)

53% (1981)

0% (1980)

62% (2001)