The bar chart illustrates data of five groups of households with different annual 
income
 in the Fix the agreement mistake
incomes
years
 2007, 2011, and 2015.
Use synonyms
Overall
,Linking Words
it is clear that
 Linking Words
Use synonyms
number
 of families who earned more than 100,000 dollars saw a Change the article
a number
the number
slightly
 increase threw 2015 Change the adverb
slight
reached
 33 Wrong verb form
reaching
Use synonyms
millons
 Correct your spelling
million
houses
. Use synonyms
Additionally
, we can notice that the Linking Words
number
 of people with Use synonyms
anuul
 income between 75,000 and 99,999 dollars is the lowest Correct your spelling
an
number
 with limited change threw the different 3 Use synonyms
years
.
Looking Use synonyms
in
 the data in more detail, the figures Change preposition
at
of
 middle-class Change preposition
for
houses
 Use synonyms
was
 the same over the Correct subject-verb agreement
were
years
 Use synonyms
as
 little above 20 Correct your spelling
a
Use synonyms
millons
 Correct your spelling
million
millions
houses
, For Use synonyms
the 
people with less than 25,000 Correct article usage
apply
number
 of Use synonyms
Use synonyms
houses
 owners increased by 4 Change the noun form
house
Use synonyms
millons
 in 2011 Correct your spelling
million
then
 slightly decreased to 27 Linking Words
millon
 in 2015.
Correct your spelling
million
On the other hand
 Linking Words
number
 of people Use synonyms
gaind
 between 25,000 and 49,999 Correct your spelling
gained
gain
dollors
 started Correct your spelling
dollars
as
  27 Change preposition
at
millios
 Correct your spelling
million
millions
then
 rose by three Linking Words
Use synonyms
millons
 in the next four Correct your spelling
million
millions
years
, Use synonyms
then
 back to 28 Linking Words
millions
 in 2015.Change to singular
million