The system continued to change, as the formula for ranking teams was tweaked from year to year. At-large teams could be chosen from any of the Division I-A conferences, though only one selection—Utah in 2005—came from a BCS non-AQ conference. Starting with the 2006 season, a fifth game—simply called the BCS National Championship Game—was added to the schedule, to be played at the site of one of the four BCS bowl games on a rotating basis, one week after the regular bowl game. This opened up the BCS to two additional at-large teams. Also, rules were changed to add the champions of five additional conferences (Conference USA the Mid-American Conference [MAC, the Mountain West Conference the Sun Belt Conference and the Western Athletic Conference [WAC), provided that said champion ranked in the top twelve in the final BCS rankings, or was within the top 16 of the BCS rankings and ranked higher than the champion of at least one of the BCS Automatic Qualifying (AQ) conferences. Several times since this rule change was implemented, schools from non-AQ conferences have played in BCS bowl games. In 2009, Boise State played TCU in the Fiesta Bowl, the first time two schools from non-AQ conferences played each other in a BCS bowl game. The last team from the non-AQ ranks to reach a BCS bowl game in the BCS era was Northern Illinois in 2012, which played in (and lost) the 2013 Orange Bowl.