0% (1990)

58% (2001)

65% (2001)

51% (2005)

56% (2005)

61% (2005)

8% (1982)

48% (2006)

58% (1984)

0% (1969)

0% (1993)

42% (1986)

0% (1988)

58% (1975)

0% (1988)

0% (1984)

70% (1997)

70% (1980)

0% (1992)