The line chart illustrates the number of family monthly expenses of families with different revenues in the USA from 2000 to 2020.
It can be seen clearly from the chart that the family monthly expenses of families with low and high income, which had upward trend and the monthly expenses of high income level had the highest income in three income levels, while the opposite was true for families with middle income. Additionally, there was a fluctuation in the number of the middle income.
In terms of high income, the average monthly expenses slightly increased from 600 to over 700 USD during the survey. In addition, families with low income had slightly growth monthly expenses for a decade, specificially from 200 USD to approximately 250 between 2000 to 2010 USD. Moreover, families with low income had dramatically increased (approximately 250 to over 400 USD) in the next decade. Furthermore, in the case of families with middle revenue, which had consistent trend for more than a decade, The amount of family monthly expenses slightly increased from 2000 to 2010, followed by a significant decrease to 450 USD in 2015, before rising again to 500 USD in 2020. Moreover, the meeting point of middle and low income in 2015. specifically 400 USD.