There's lies. Damned lies, and there are statistics. Those figures look like misinterpretation of statistics.
For example, 135 firearms were seized. If they were unregistered firearms (most likely), then possession leads to action being taken on the status of the fireams licence. So that woul abccount for many of the 44 licences. Similarly, improper storage could also result in cancellation/suspension. There is no reported data on the number of "unfit person" cancellation/suspension matters.
I recently assisted in transporting five registered fireaarms to a gunsmith. I don't have a firearms licence, so, technically I committed an offence buy physically carrying the firearms to and from the car they were carried in. Since I was helping my older sister to carry the firearms to and fro, I suppose I could have used the "reasonable in the circumstances" defence.
An aside:
As my sister and I were driving from the gunsmith's with the firearms in the boot of the car, we were stopped for RBT. My sister was driving, and her licence was in her bag on the back seat. In a moment of confusion she told the constable , "My licence is in the boot." I yelled out, "Don't look in the boot!", which had the constable laughing. It would have been OK as my sister has a firearms licence and she had all the registration documents in the car with her. Also, each firearm was secured with a trigger guard lock.