The graph below gives information about the percentage of the population in four Asian countries living in cities from 1970 to 2020, with predictions for 2030 and 2040.

The bar graph illustrates how many families there were in the US by their yearly income in three years. 2007, 2011 and 2015.

Overall

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, the number of households with every income rate increased over the period. The figure for $100,000 or more had the maximum numbers and ranked

first,

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while

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that for $75,000-$99,999 stood as the minimum, ranking

last

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in all three years.

Initially

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, figures for less than $25,000 and $25,000-$49,999 were approximately 25 million (25M). After they saw an increase to almost 30M, there was a minimal decrease of 2M for both. $50,000-$74,999 and $75,000-$99,999 were 20M and 15M, respectively in the first year.

Although

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$50,000-$74,999 remained unchanged, $75,000-$99,999 experienced a low at 14M and marginally grew to 15M. $100,000 or more stood nearly at 30M in 2007 and showed a decline of 2M, followed by a substantial rise to 33M.