The number of public companies occupying the Small Cap (<$300M), Mid-Cap ($300M-$800M) and Top Tier (>$800M) segments at year-end 1995, 1996, 1997, and 1998, plus Aug. 20, 1999. The Mid-Cap region currently is the "black box" where win-lose outcomes determine the rate of graduation into the Top Tier, or demotion into the Small Cap pool.