30% (1989)

51% (2008)

30% (2004)

30% (1991)

20% (1992)

52% (2011)

54% (2004)

45% (1999)

20% (2011)

43% (1984)

68% (2007)

62% (1985)

25% (2001)

60% (2005)

44% (1994)

20% (1990)

0% (1984)

60% (1984)

42% (1984)

27% (2009)