22% (2003)

10% (1997)

53% (2000)

43% (2008)

25% (2003)

30% (1996)

34% (2002)

23% (2005)

43% (2001)

33% (2004)

30% (2018)

28% (2003)

40% (2002)

24% (2003)

27% (2000)

35% (2005)

56% (1998)

10% (1999)

10% (2002)

26% (2006)