64
Figure 36. ITS et IPS à Annaba (a), Béjaïa (b), Alger (c), Oran (e) et Béni-Saf (d) entre 1950
et 2010.
-3
-2
-1
0
1
2
3
4
1950
1960
1970
1980
1990
2000
2010
a
IPS
ITS
-3
-2
-1
0
1
2
3
4
1950
1960
1970
1980
1990
2000
2010
b
IPS
ITS
-3
-2
-1
0
1
2
3
4
1950
1960
1970
1980
1990
2000
2010
c
IPS
ITS
-3
-2
-1
0
1
2
3
4
1950
1960
1970
1980
1990
2000
2010
d
IPS
ITS
-3
-2
-1
0
1
2
3
4
1950
1960
1970
1980
1990
2000
2010
e
IPS
ITS