That's a very good question. Thank you for the opportunity to be more precise on this issue.
At Transport Canada there are two different major programs of inspection: the transportation of dangerous goods, which includes rail, but also includes marine and air and, through provincial authorities, road, and that implements the Transportation of Dangerous Goods Act; and we have a separate program of rail safety inspectors who implement the Rail Safety Act.
In the case of the transportation of dangerous goods, the number of inspectors has increased from 30 to 130, which is more than a quadrupling of their number.
I think the statistic you're referring to probably relates to rail safety inspectors. In the statistics I'm looking at, that number increased from 107 in 2012 to 152.
The number of rail safety inspectors went up by about 50% and the number of dangerous goods inspectors went up by over 300%.