If I may, we have taken very concrete steps since 2014. As an example, CN's annual capital investment last year was $2.7 billion. This year it will be $3.2 billion, an increase of $500 million. We set a big number for capital. It's a great network that we're investing in, but clearly it's where you invest the capital that makes a difference for resilience and fluidity, so under the leadership of Mike Cory and Jean-Jacques, we've looked at our capital constraints and where the bottlenecks are that we can address very quickly.
You're going to see, as of this spring, reactions being made. It is true that it's somewhat reactive from what happened this fall, but the big difference this fall was this unforeseen surge in traffic that we had to address as we went along here as winter hit. It's important to realize that this year, the $3.2 billion is way more than 20% of our gross revenues, which is probably a rule of thumb for some of the railways in North America. We're investing more capital to ensure that we can address the bottleneck issues. We're hiring employees at a rate we haven't seen for many years. We are hiring for what should be many years to come.
I think the big difference compared with 2014 is that in 2014 we had an increase in volumes and all of a sudden a dip. Obviously, we didn't react quickly enough. I think this time the railroaders in the room have probably learned a lesson that we have to reinvest early on and see the trends coming earlier. Part of Bill C-49 will be this exchange of information between us, Transport Canada, and our customers to try to get a better feel for logistics planning. If we do have an increase in volume, how do we address it?
I think the best answer to your question is that the railways must invest in the network at a point to avoid the bottlenecks so we can face the surge in traffic as it comes along.