These are data 
of
 the total value and the the source of fish imported to the US which Change preposition
on
displayed
 in Add a missing verb
are displayed
a
 form of Correct article usage
the
pie
 chart and a table. 
Add an article
a pie
the pie
Overall
, it is noticeable that Canada has experienced a constant decrease Linking Words
for
 its imports, Change preposition
in
in contrast
 with Linking Words
other country
 Change the wording
another country
other countries
which its
 source of fish has Correct pronoun usage
whose
been rose
 rapidly and Wrong verb form
risen
became
 the biggest importer Wrong verb form
become
for
 the US. 
Looking at the details, in 1988, Canada Change preposition
of
was 
played the role Unnecessary verb
apply
as
 the main investor with a total value of 60% out of $6.57 billion, Change preposition
of
whereas
 China and other Linking Words
country
 Fix the agreement mistake
countries
was
 left behind as Change the verb form
were
its
 imports only Correct pronoun usage
their
reach
 40% in total.
Wrong verb form
reached
However
, in 2000, Canada's import Linking Words
has 
Unnecessary verb
apply
fell
 dramatically to only 28%, Change the verb form
fallen
while
 Linking Words
china's
 fish Capitalize word
China's
import
 Fix the agreement mistake
imports
has risen
 slowly to 30%, and other Wrong verb form
rose
country's
 Change the noun form
countries
country
was 
increased extremely to around 40%.
Unnecessary verb
apply
To sum up
, Linking Words
this
 data shows the gap Linking Words
of
 each importer Change preposition
between
countries
 and the difference Fix the agreement mistake
country
of
 its imports from year to year.Change preposition
in