Madam Chair, it varies depending on, I think, the organization and the nature of the service. We do some on a longer term basis, but we try not to have all our agreements expire at the same time, so some are for a shorter term and some are for a longer term. In part this is based on risk in some areas, but also around needs assessment in terms of what we're looking at or where we want to see a particular contract come back.
Maybe Ms. Primeau can explain a bit how we manage some of this under the call for proposal and how we try to make sure that organizations are not left in limbo.