Study the given table and answer the question that follows.

	Productions of different cereals (in million tonnes)
Year	Rice	Wheat	Barley	Others
2016	6800	2700	2500	4500
2017	8000	4200	4400	3000
2018	6800	3500	5200	4600
2019	7200	4000	5800	5000
2020	8200	5600	6100	6900

Which of the cereals shows continuous increase in its production over the years?