45% (1996)

58% (1992)

52% (1996)

57% (2002)

35% (1993)

51% (1998)

61% (1999)

37% (1997)

30% (1997)

27% (1991)

45% (1993)

27% (1992)

0% (1998)

40% (2002)

53% (2000)

41% (2001)

20% (1991)

36% (2002)