I can't say that we are tracking it. It is a key part of our Workplace 2.0 initiative, which is about improved quality, more productive workplaces. We're talking about greater access to natural light and improved air handling, fewer interior walls, which allows for the air to be more efficient. So that is very much a part of what we're rolling out in our Workplace 2.0 strategy that was announced in Budget 2012. Workplace 2.0 is moving to the next level.
On April 18th, 2013. See this statement in context.