48% (1995)

43% (1994)

31% (2001)

45% (1994)

34% (1993)

45% (2011)

54% (1991)

46% (1987)

49% (1991)

49% (1997)

41% (2004)

46% (1995)

41% (1991)

30% (1997)

36% (1988)

53% (1995)

52% (2002)

25% (1997)

46% (1997)

48% (1995)