0,8 . - - - - - - - - - - - - -- - - -
0,7
0.6
" Q. 0.5
-!i'
F o.4
0.3
0.2
0.1
0.0
10
1
-
I l
O lml.
1
- ., - .-'-~I L 980 ~..._.~ l9' -
1
-Ll.-.
1982
...._.Lll1
'83 ~-WJ1904
3,5
3,0
2,5
2,0
!i' 1.s
F
1,0
o.s
0.0
1979
1980
1981
50
50
40
1979
1980
1981
150
120~
:;.
90
!i'
!l'
60
30
1979
1980
1981
0
19&2
1983
1984
1985
1986
1987
1988
1989
1990
1'91
-
-
,_.
11
Fi l
-
1--J
1985
.... 1987 1i88 1989 1990 1991
198$
1986
1987
1981
1919
1990
1991
u
u
5000
4000
"
2-3000
F
2000
1000
0
1979
1990
1981
198S
198&
1987
1988
1989
1990
1 . . 1
500 1
400 :
l
1987
.... 1 . . . 1990 ....
700
600
500
50
1
M•j:t;:M
40 r------------- ------------ -------~ 30
!l' 20 r10 If------1979
... ,,
50
40
~ 30
_J
1979
1i90
1981
1982
1983
1984
108S
1986
1987
1988
1989
1990
1991
c n 11
t:
/V
T c
5