In what might be one of the more amazing things in recent years in any of the four major professional sports in the U$.$S$.,$ for EACH of these six years, the five teams in the AL$.$ East finished in EXACTLY the same order $[$Yankees; Red Sox; Blue Jays; Orioles; Rays$].$ The Yankees won each year $($not a shock, I suppose...they went to the World Series in FIVE of those six years, winning in $1998,1999,$ and $2000,$ and losing to the Arizona Diamondbacks in $2001$ and then to the Florida $($now Miami$)$ Marlins in $2003....$still, an impressive run!!$)$

If we calculate the HHI $($both actual and ideal$)$ for AL East Championships during that period, the actual HHI is quite straightforward; the same team won each year. $....$thus, the HHI would be:

HHI$=(\frac{6}{6})2=$I