The following table shows CFC emissions (in million metric tons) from various sectors for an industry for a period of 5 years. Based on the table answer the question given below.

The contribution of CFC emissions from the fertiliser sector, in comparison to the total CFC emissions from all the sectors, was the least in which year?

​$$\text{Contribution Percentage (Fertiliser)} = \frac{\text{Fertiliser Sector Emissions}}{\text{Total Emissions from All Sectors}} \times 100$$​​

Total Emissions = 200 + 500 + 80 + 100 = 880

Fertiliser Contribution = $$\frac{500}{880} \times 100 = 56.82\%$$​​

Total Emissions = 300 + 600 + 90 + 110 = 1100

Fertiliser Contribution = $$\frac{600}{1100} \times 100 = 54.55\%$$​​

Total Emissions = 320 + 650 + 100 + 120 = 1190

Fertiliser Contribution = $$\frac{650}{1190} \times 100 = 54.62\%$$​​

Total Emissions = 400 + 700 + 150 + 150 = 1400

Fertiliser Contribution = $$\frac{700}{1400} \times 100 = 50.00\%$$​​

Total Emissions = 450 + 800 + 200 + 180 = 1630

Fertiliser Contribution = $$\frac{800}{1630} \times 100 = 49.08\%$$​​

Thus,

The contribution of CFC emissions from the fertiliser sector, in comparison to the total CFC emissions from all sectors, was least in 2019 at 49.08%.