rer. pc Sr er 
RR EE NSSNSNSNSSSSSS NN] 
1981 AVERAGE 
AVERAGE 
  
  
1982 
  
  
NSS INNEN 
DNS) 
  
  
  
[ITIITIT] 8v ADVANCED COUNTRIES 
EZ sy DEVELOPING COUNTRIES 
ru GLOBALLY. 
1979 1980 
CONSUMPTION: 
1978 
  
  
  
UII] 8Y ADV.COUNTRIES 
EZ BY DEV. COUNTRIES 
1977 
CONSUMPTIONS: 
GLOBALLY 
  
  
  
1976 
SSSSSSSSSSSSSSSSSSSSSSSSSNS 
= 
Oo 
o 
[d 
« 
% 
a 
z 
3 
TR 
o 
z 
oO 
E 
a 
2 
8 
< 
> 
2 
a 
5 
> 
  
1975 
  
  
CONSUMPTION 
CONSUMPTION 
4