The North Side (which has historically been the highest density area of the city) skew no doubt reflects the Chicago building boom between 2000 and 2010, which has focused primarily on North Side neighborhoods and downtown. It may ease somewhat in the wake of the current high level of residential construction along the south lakefront. For example, ridership at the linked Roosevelt stops on the Green, Orange, and Red Lines, which serve the burgeoning South Loop neighborhood, has tripled since 1992, with an average of 8,000 boardings per weekday. Patronage at the Cermak-Chinatown stop on the Red Line (4,000 weekday boardings) is at the highest level since the station opened in 1969. The 2003 "Chicago Central Area Plan" proposed construction of a Green Line station at Cermak, midway between Chinatown and the McCormick Place convention center, in expectation of continued density growth in the vicinity. This station opened in 2015.