quote:
An increase simply means you compare recent years with former years within a given timeframe, which I've stated, to determine whether there is indeed an increase or not.
What is the timeframe?
On a technical point, buzsaw seems to be correct. In mathematics we can say that f is increasing over time if df/dt is positive - apologies for introducing calculus. We don't actually need to compare one period of time with another. We can look at trends, simply comparing this years data to the previous years data. If there is a consistent upward trend, then we can say that there is an increase and there is no need to compare two distinct periods.
If I am reading buzsaw correctly, that is the position he is taking.
On the factual question - whether buzsaw has accurately reported the trends, and over a long enough period to them to be significant - consider me a skeptic.