So to answer the question, I assembled my stash between about 2000 to 2005 and the kits themselves are from the 1970s and maybe even 1960s. I have one modern 1/35 Dragon AFV kit but the rest are oldies.
I have the 1/32 Monogram Panzerspahwagen which I did not build as a youngster but bought because of the Shep Paine Diorama tip sheet that came with it. I've built others of the old monogram armour and they are not very good so this one was a good candidate for selling or giving away. The ebay price is low though so I may just build it. Or give it away after scanning the tip sheet.