51% (2000)

0% (1987)

45% (1984)

44% (1995)

51% (1993)

50% (1977)

10% (1984)

35% (2006)

55% (1980)

45% (2008)

63% (1989)

10% (1999)

25% (1999)

10% (1996)

80% (1988)

0% (1977)

57% (1982)

60% (2005)

35% (1999)

46% (1980)