The growth in staff size is a relatively recent development.
An additional 31 percent planned to maintain their current staff size.
Over the same period, newspapers in 14 states have increased the size of their reporting staff.
The exact size of its staff is secret but was estimated at about 20,000 in the early 1980s.
The firm also expects to increase the size of its administrative staff, now about 400 people.
Just over a third of the respondents, 35.6 percent, plan to keep staff sizes at current levels, down 2.6 percentage points.
The company relocated to a new office and increased the staff size significantly.
On smaller issues, arguments have broken out over staff size and access to car phones.
The organization's staff size has varied over the years.
In some cases, that means stores can reduce staff size by implementing automated systems.