The given chart shows the data about 
students
 Use synonyms
of
 Change preposition
with
language
 skills, categorized by no other Use synonyms
language
, German only, French only, Spanish only, another Use synonyms
language
 and above two other Use synonyms
Use synonyms
language
, in British between 2000 and 2010.
Change to a plural noun
languages
Overall
, the growth of proportion can be observed, with the categories about no or two other Linking Words
Use synonyms
language
, and another Change to a plural noun
languages
language
 showing Use synonyms
small
 increase, Add an article
a small
while
 the others is a downward trend, Linking Words
excepted
 for Change the form of the verb
except
Use synonyms
percentage
 of Add an article
a percentage
the percentage
spekaing
 German.
In detail, the Correct your spelling
speaking
percentage
 of the Use synonyms
students
 who can speak only Use synonyms
english
 experienced a rise from 30% to 35 %, especially between 2000 and 2010. Interestingly, the Change the capitalization
English
percentage
 of the Use synonyms
students
 who can speak one another Use synonyms
langauge
 or two other Correct your spelling
language
langauge
 Correct your spelling
language
increase
 to 5% during the same period.
Wrong verb form
increased
In contrast
, the Linking Words
students
 who can speak only Spanish or French declined, which the Use synonyms
percentage
 of them go down by 10% and 5% respectively. Use synonyms
Additionally
, the Linking Words
percentage
 of Use synonyms
the 
German Correct article usage
apply
speaker
 remained steady at 10%, which was Fix the agreement mistake
speakers
a
 only not Correct article usage
the
changed
.Replace the word
change