With respect to consumption shares in 2004,the bottom 10% (poorest of the poor) of the population consumed 2.56% of goods and services, while the top 10% (super rich) consumed 26.59% of all goods and services.
The richest 10%, however, is said to be responsible for 26.59% of national expenditure or income in 2016. This increased to 33.72% in 2013 but decreased to 31.09% in 2016.
According to NBS, the top 20% were responsible for 42.40% of national income/expenditure in 2004. ‘‘This increased to 48.28% in 2013 but declined to 46.63% in 2016. While no agreed standard definition of the Nigerian 'Middle class' exists, for the purpose of this report we have classified Decile 01-03 as the lower class, Decile 04-07 as the 'middle class' and Decile 08-10 as the upper class,’’ it stated.
Accordingly, the report indicates that upper class was responsible for 58.39% of national income/expenditure down from 59.42% in 2013. The share of the upper class in national income had been rising between 2004 and 2013 before reducing in 2016.
The 'middle class', on the other hand, accounted for 30.26% of national income/expenditure in 2016, higher than 29.14% in 2013. The share of the middle class had been declining between 2004 and 2013 in favor of the higher class but that reversed in 2016. The lower class, on the other hand accounted for 11.35% of national income/expenditure in 2016, lower than 11.43% in 2013.