After zooming in the axis, the constant decrease is clear. I don’t know whether 129 million hectares is a big deal or not, but we were happier if the trend were the opposite. However people are also planting forest, and since they cut more and more, they plant more and more too. Now the rate of planting is less than the rate of cutting, but I believe one day the trend will be reversed.

What: Land used as forest and types of forest. Mind the axis on the left graph which does not start at zero.
When: 1990-2017
Where: The world
Source: FAO