In which year is the difference between the percentage increase in per capital income and the percentage increase in population compared to the previous year the highest?

In the above given bar graphs the population and national income of a country from the fiscal years 2014-15 to 2019-20 are shown.

Let us tabulate the above information from the graph into a table and also calculate per capita income for all the fiscal years.

On the basis of the above table

We need to find the year in which the difference between the percentage increase in per capital income and the percentage increase in population compared to the previous year the highest.

Let us check for each option and calculate the difference of % increase in per capita income and % increase in population compared to previous years for the following fiscal years.

Option A) 2017-2018

The % increase in per capita income in the year 2017-2018 as compared to 2016-2017 is

=> (4221-3786)/3786= 11.49%

The % increase in population in the year 2017-2018 as compared to 2016-2017 is

=> (117.25-115.5)/115.5 = 1.52%

Thus, the difference between them = 11.49-1.52 = 9.97

Option B) 2015-2016

The % increase in per capita income in the year 2015-2016 as compared to 2014-2015 is

=> (3482-3098)/3098 = 12.40%

The % increase in population in the year 2015-2016 as compared to 2014-2015 is

=>(112.5-111)/111 = 1.35%

Thus, the difference between them = 12.40-1.35 = 11.05

Option C) 2016-2017

The % increase in per capita income in the year 2016-2017 as compared to 2015-2016 is

=> (3786-3482)/3482 = 8.73%

The % increase in population in the year 2016-2017 as compared to 2015-2016 is

=> (115.5-112.5)/112.5 = 2.66%

Thus, the difference between them = 8.73-2.66 = 6.07

Option D) 2018-2019

The % increase in per capita income in the year 2018-2019 as compared to 2017-2018 is

=> (4857-4221)/4221 = 15.06%

The % increase in population in the year 2018-2019 as compared to 2017-2018 is

=> (120-117.25)/117.25 = 2.34%

Thus, the difference between them = 15.06-2.34 = 12.72

Thus, the difference between the percentage increase in per capital income and the percentage increase in population compared to the previous year the highest for the year 2018-2019. (Option D)