The provided table illustrates the amounts of grains produced every five years from 2010 to 2030, specifically focusing on wheat, barley, maize, and rice.
It is clear that wheat has been produced in the largest quantities each year, while rice has consistently been the least produced grain. All types of grains show a gradual increase in their production levels; however, the amount of maize produced remained constant between 2015 and 2020, as well as between 2025 and 2030.
There was a significant increase in production for both barley and wheat in 2015 compared to 2010. Wheat production rose by 5 million metric tons, the largest increase for any year shown in the table. Additionally, barley production saw a rise of 20 million metric tons, which was double the increase recorded in any other year. Maize production also experienced a slight increase of 0.5 million metric tons from 2010 to 2015 and again from 2020 to 2025. Unfortunately, there was a decline in rice production between 2010 and 2015, with production dropping from 24.7 million metric tons to 24.3 million metric tons, making it an exception to the upward trend seen in the other grains.
Overall, wheat has consistently been the most produced grain, while rice has been the least produced. Lastly, there is a general upward trend in production during most of the years covered.