The graph depicts the amount of carbon dioxide produced per person in 
United
 Kingdom, Sweden, Italy and Portugal between 1967 and 2007. Correct article usage
the United
Overall
, Linking Words
United
 Kingdom and Sweden’s Correct article usage
the United
co2
 production declined Correct your spelling
CO2
while
Linking Words
,
 Portugal and Italy’s Remove the comma
apply
figure
 increased over the period.  
Fix the agreement mistake
figures
Initially
, Linking Words
United
 Kingdom and Sweden produced the highest amount of Correct article usage
the United
co2
 per person among all 4 countries with 8.5 metric Correct your spelling
CO2
tonnes
 and 11 metric Use synonyms
tonnes
 respectively. The formerUse synonyms
,
 had experienced a slight decline by 2 metric Remove the comma
apply
tonnes
 by 2007. The latterUse synonyms
,
 witnessed a rapid surge by 2 metric Remove the comma
apply
tonnes
 in 10 years, Use synonyms
then
 dipped to 5 metric Linking Words
tonnes
 by the end of the period. 
In the beginning, Italy and Portugal produced 4.2 metric Use synonyms
tonnes
 and 1.8 metric Use synonyms
tonnes
 of carbon dioxide per person. By the end of the period, the former had moderately risen by 2.8 metric Use synonyms
tonnes
 and the Use synonyms
later
 had steadily increased by 4.2 metric Correct your spelling
latter
tonnes
.Use synonyms