The bar chart compares the houshold annual income in three years (2007, 2011, and 2015) in America.
Overall, it can be observed that there is an upward trends throughout the period, even though there is a slight dip in the second year, especially for the family with the lower and highest income. At the same time, the upper-middle and middle income housholds relavitely steady.
In 2017, the highest income come from the family with $100,000 or more approximately 28 millions, and the lower and lower-upper class family accounting for around 25 millions and 27 millions respectively. Meanwhile, the upper-middle class only around 22 milions, and middle class had the lowest income around 14 millions.
By 2011, the highest income houshold sufferd a decline to around 22 millions. Meanwhile, the lower and lower-upper class experienced a remarkable jumped, to nearly 30 millions respectively. However, the upper-middle class remain steady and middle class saw a slight decrease to about 13 millions. In 2015, the housholds income witnessed a recovery, paticularlly the highest income household rebounded to nearly 35 millions. Meanwhile, the lower and lower-upper class sufferd a slight decreased approximately 26 millions and 28 millions respectively, and for upper-middle and middle class saw a steady increased.