BTW, interesting note on the stuff before 1953 ~ it's all estimates. They apparently never kept track of how many federal employees there were.
You are the one who started mentioning 1940. Heck, every year picked outside of the article which started this thread was your choice.
The article deals with a span of 2000-2010 (iirc). It talks about federal employees not being fired. If you can provide statistics which prove that the writer is lying, feel free. I doubt you will succeed since the writer would have to be a moron to publish something with false statistics one a subject which is easily verified.
You claimed that federal employment was relatively static between 1964 and the present. I demonstrated clearly (and repeatedly at this point) that you are being deceptive.
As to the old records business, I suspect that has more to do with the lack of good record keeping, and the survival of old records more so than not keeping track in the first place. Before computers data storage was a bear.