According to an advert for the 2006 Lockwood-Post Directory (which at US$445 I can’t afford, so I can’t give any more details):
24 new pulp and paper mills opened globally
More than 60 pulp and paper mills closed, 50% in North America alone
Approximately 80 new paper machines were added and 50 shut down
What this overview doesn’t show is that the mills that closed are probably much smaller than the new mills that are starting up.