I'd like just to add to what my colleagues from the Department of Finance have said.
I think, Mr. Chair, one of the things that's important to look at, as well, is the purpose of the programs that have been set up. Clearly, the purpose of the measures set out in budget 2009 is stimulus; hence the focus on renovation and repair, rehabilitation, and hence the two years of money. But the Building Canada plan is actually a seven-year program, and it was designed, in large measure, for strategic investments—major highway interchanges, borders, major rapid transit systems in cities, those sorts of things—and those projects have a much longer time horizon and, as my colleagues noted, in many cases have significant regulatory and other hurdles to go through.
So it's not a perfect answer, but there are in some cases reasons why some of the money in Building Canada has not gone out yet. The purpose of the program is not immediate stimulus; it's actually strategic investment.