[NikolaNovak]

Sure, so if I ignore the fake CPI, how do I do that? I can only easily find price of milk from 1995, not earlier; bread from 1980, somewhat dubious sources.

I'm assuming in most countries also, subsidies, formal/official cartels, price controls and other policy instruments would make it very hard to compare apples to apples.

[TedDoesntTalk]

If you don’t think the cost of farming has gone down in 100 years because of better tools, equipment, automation, irrigation, etc, I’m very surprised. You don’t need statistics. Just look at farm implements from 100 years ago.