OK, from what I could gather, indeed this year has seen more land burnt than others years before. As I said, the amount of fires may be less, but the area burnt is the important part.
Previous intense fires were the 2015-2016 fires during the "El Niño" dry season which burnt approximately 1 million hectares of forest. roughly 400,000 in 2015 and 500.000 in 2016
In the 2010 fires around 500,000 hectares of forest was lost to the fires
This year so far depending on the sources the area burnt by the fire ranges from 1 to 1.8 million hectares burnt.
