The highest one was
  Cities
 Change the noun form
 City
areas
 that Use synonyms
outside
 of the country and the lowest one Add a missing verb
were outside
also
 was outside Linking Words
one 
Rural Correct pronoun usage
apply
areas
. 
        
         Cities Use synonyms
areas
 Use synonyms
was
 rise in all two aspects of counting. In Change the verb form
were
percentage
 of Correct article usage
the percentage
people
 that born in Use synonyms
Add an article
the country
country
 they had approximately 70% in 2010 Add a comma
country,
that
 more Correct word choice
and
to
 20% that was in 1995. They Change preposition
than
also
 increase to 20% in outside Linking Words
areas
 of Australia Use synonyms
that
 account Correct pronoun usage
which
60
% and after 15 years glow to 80%.  Towns in that case do not Change preposition
for 60
had
 so big changes. Change the verb form
have
People
 who Use synonyms
born
 in Australia from 1995 to 2010 had Add a missing verb
were born
glow
 down from 20% to Correct your spelling
grown
near
 15%. Change the word
nearly
People
 who Use synonyms
lives
 in Change the verb form
live
Australians
 town does not change after 15 years and calculate about 10%. The biggest Correct your spelling
Australian
changes
 was in Rural Fix the agreement mistake
change
areas
 Use synonyms
percentage
 of Add an article
the percentage
individuasl
 that Correct your spelling
individuals
individual
does
 not born in Australia that rocketly Verb problem
were
slide
 from 40% to under 5%. Wrong verb form
slid
Linking Words
Also
 Add a comma
Also,
people
 who Use synonyms
born
 in the country was 2 Add a missing verb
were born
time
 more in 1995 than in 2010.Change to a plural noun
times