45% (1996)

35% (1993)

57% (2002)

58% (1992)

51% (1998)

37% (1997)

36% (2002)

45% (1993)

52% (1996)

40% (2002)

61% (1999)

41% (2001)

27% (1991)

27% (1992)

53% (2000)

30% (1997)

0% (1998)

20% (1991)