Does anyone know where one can find the estimated size per year of the Sahara. All I kind find are reductionist crap like it’s 10% bigger now than 1920. But thi

Does anyone know where one can find the estimated size per year of the Sahara. All I kind find are reductionist crap like it’s 10% bigger now than 1920. But this does not say if it’s in a growing or shrinking trend just that it’s bigger now than then. Was it even bigger in 2000? And now shrinking from a top or has it been a gradual increase?