I dunno about “as much as in 1620”, but compared to 1890 or so, it’s probably orders of magnitude greater. All you need to do to determine that, is drive through the state on back roads, and note all the low hand-stacked stone walls running through the trees. All those walls delineated meadows and farmed fields that are now long-overgrown with large trees.
Fake News!
Those walls delineated New Hampshire's famed "Rock Farms". ;)