60% (1970)

70% (2003)

33% (2004)

0% (1994)

60% (1990)

80% (2012)

20% (2009)

60% (1995)

90% (1994)

0% (1994)

100% (1989)

20% (2008)

0% (2001)

0% (2010)

0% (1991)

25% (2003)

70% (2006)

75% (1998)

0% (1997)

0% (2002)