the chart below shows the number of household in the US by their income in 2007, 2011 and 2015.

This

Linking Words

bar chart illustrates the number of US households, given in loads , by annual income over the period of 2007 to 2015.

Overall

Linking Words

, the trend of income

does

Verb problem

has

show examples

not really

change

Wrong verb form

changed

show examples

over the past years;

however

Linking Words

, the development of earnings of above 100,000 dollars has significantly risen. We can see that middle-income people stay steady over the period of the year,

whereas

Linking Words

the high-income people started in 2007 with about 30

million

Use synonyms

and fell in 2011 by about 2

million

Use synonyms

and

then

Linking Words

rose to about 33

million

Use synonyms

. On the other side, low-income started low with about 25

million

Use synonyms

and increased to about 30

million

Use synonyms

and fell slightly to about 27

million

Use synonyms

. All in all, the figures tell that over the year, the high-income people are increasing,

while

Linking Words

the middle-income stay constant , and the low-income stay unstable.