42% (1999)

40% (2005)

48% (1998)

30% (2000)

36% (1998)

34% (2001)

40% (2002)

39% (2002)

37% (2002)

49% (2000)

53% (1997)

43% (1987)

34% (2002)

46% (2001)

32% (1998)

44% (1997)

13% (2002)

24% (1999)

50% (2000)

47% (2001)