0% (2010)

70% (1961)

80% (2005)

0% (1991)

80% (2001)

100% (2009)

70% (1982)

80% (1985)

0% (1992)

0% (1972)

0% (1996)

0% (1982)

80% (1989)

40% (1977)

65% (1980)

0% (1991)

40% (2001)

0% (1969)

0% (1981)

40% (1995)