The line chart illustrates the average monthly expenditures of 3 classes of families from the USA in the period of 20 years from 2000 to 2020
Overall,we can all see that all familly groups started at different level.Additionally,while the high and low-income family groups consistently increased,the middle-income experienced a one-time drop
In detail,during the fisrt period,high,medium and low-income classes of families started at exactly 600$,400$ and 200$ of average monthly expenses,respectively.After 5 years,the high-income family groups had its biggest increase of almost 100$.It continued to rise slightly until it reached 700$ in 2010 where it remained the same for the next 5 years before increasing slightly again in 2020
In term of middle-income family groups,it rose to 450$ for the next decade,however,in 2015 it experienced a sudden drop to its original amount before rising up to 500$ in the last period.Lastly,the low-income family groups had the biggest increase among 3 categories.For about 10 years it only went up for 10$.From the on,it skyrocketed within 5 years and reached double of its starting amount and in the last period it continued to rise to 450$