Percent of net employment growth by size of firms, second quarter 1990-third quarter 2005 (seasonally adjusted) Firm Size Percent (number of employees) 4 or fewer 10.5 9 or fewer 17.1 19 or fewer 24.9 49 or fewer 36.2 99 or fewer 45.0 249 or fewer 56.3 499 or fewer 63.7 999 or fewer 70.1 1,000 or more 29.9