In the last national election, how many days did it take for the EMB to establish final results?

"TSE confirma triunfo del 'No' en el referendo boliviano"

Although the Supreme Electoral Tribunal was able to indicate the results of the 2016 referendum within days of the election, it could not certify the final computation for two weeks as a re-vote needed to take place in two departments after votes were cancelled at 24 voting stations.