For one thing, what we're referring to here is a combination of two different things in two different ways. First of all, we quoted fiscal year data, which referred to 2016-17 because those are the latest final confirmed numbers. That really addressed either the totality of our assistance or what we call our “development assistance” as distinct from humanitarian assistance.
Some of the more recent numbers I quoted for calendar 2018 are on humanitarian assistance, because those are much more recent and they are tracked immediately, whereas development assistance by its nature takes longer to track, because we're never sure on April 1 exactly how much we will have finished spending on the long-term development projects by March 31 of that fiscal year. That's basically the explanation.
If we take an average of all these things over the last five years, the pattern has been quite stable. It's mostly humanitarian assistance, responsive, of course, to things like climate shocks, which, as you know, are cyclical. We respond whenever there's a greater threat of famine, for instance.