100% (1989)

0% (1991)

60% (1970)

0% (2010)

80% (2008)

70% (2003)

70% (2006)

25% (2003)

33% (2004)

0% (1990)

40% (2000)

54% (2011)

60% (1995)

0% (1994)

60% (1990)

20% (2011)

34% (2005)

20% (2009)

75% (1998)

0% (1997)