The following table shows Net National Income (in Lac Crore) and Per capita Net National Income (in thousand) of India during the 5 year period from the year 2015-16 to 2019-20. Based on the data in the table, answer the questions that follow

Year	Net National Income (in Lac, Crore rupees)	Per Capita Net National Income (in thousand rupees)
2015-16	122	95
2016-17	136	105
2017-18	151	115
2018-19	167	126
2019-20	177	132

In which year the percentage (%) increase in the Net National Income over the previous year was maximum?

The correct option is 2016-17.

Step-by-step Explanation:

To find the year in which the percentage (%) increase in Net National Income over the previous year was maximum, we extract the Net National Income values from the given table for each consecutive pair of years:

• 2015-16: 122 Lac Crore rupees
• 2016-17: 136 Lac Crore rupees
• 2017-18: 151 Lac Crore rupees
• 2018-19: 167 Lac Crore rupees
• 2019-20: 177 Lac Crore rupees

The formula to calculate the percentage increase over the previous year is:

$\text{Percentage Increase}=\frac{\text{Net National Income in Current Year}-\text{Net National Income in Previous Year}}{\text{Net National Income in Previous Year}}\times 100$

Now, let's calculate the percentage increase for each year:

1. For the year 2016-17:
Increase over 2015-16 = 136 - 122 = 14 Lac Crore rupees

$\text{Percentage Increase}=\frac{14}{122}\times 100\approx 11.48\%$

2. For the year 2017-18:
Increase over 2016-17 = 151 - 136 = 15 Lac Crore rupees

$\text{Percentage Increase}=\frac{15}{136}\times 100\approx 11.03\%$

3. For the year 2018-19:
Increase over 2017-18 = 167 - 151 = 16 Lac Crore rupees

$\text{Percentage Increase}=\frac{16}{151}\times 100\approx 10.60\%$

4. For the year 2019-20:
Increase over 2018-19 = 177 - 167 = 10 Lac Crore rupees

$\text{Percentage Increase}=\frac{10}{167}\times 100\approx 5.99\%$

Comparing the calculated percentage increases:

• 2016-17: 11.48%
• 2017-18: 11.03%
• 2018-19: 10.60%
• 2019-20: 5.99%

The maximum percentage increase in Net National Income occurred in the year 2016-17 (11.48%).