Hi Mobofroos
While I cant tell you "keep/ignore coin XXX", the following may help you decide for yourself.
As well as mintage, I would also consider "what proportion of the coins out there are this year" as it is directly related to "how hard is it to get one of these coins if you want to find one".
That would greatly affect how desirable they are for a collector.
If someone wants a set including all the years, and it is easy to find all the coins, then none of them will be worth much.
If a particular year is hard to find then that year will be worth more.
Compare the mintage figures with the total number of coins produced (and/or to numbers of coins in other years) to work out how hard it is to find a particular year.