80% (2010)

50% (1993)

0% (1973)

0% (1959)

0% (1950)

30% (2001)

0% (1995)

0% (1999)

0% (1957)

0% (1963)

0% (1992)

0% (1994)

60% (1970)

0% (2004)

80% (1999)

0% (1975)

80% (1984)

45% (1998)

0% (1992)

40% (1992)