Madam Speaker, the definition of that term depends on a number of the factors used to consider what is natural or unnatural. In the United States I believe that number is guesstimated to be in the neighbourhood of 4%. In Canada it would be somewhat higher.
Since the time that Mr. Martin was the minister of finance, 10 or 15 years ago, I suspect that the number has come down a bit below the 7% figure. The most profound influence on that calculation today is the aging of the baby boomer generation. It may well be, before the 7% moderates very much, that we will have to get past the retirement rate of the baby boomers, which is a very significant economic factor.