Because of where I live, what I do, and who my neighbors are, I have a pretty good idea what prices are like for the farmers who are producing the milk and hamburger that's on those graphs. Those of you living in town might be interested to know what you're paying and what the farmer is getting paid aren't strikingly related.
A few years ago (after the crash, during the 'recovery') milk priced were high. Dairy farming was fairly profitable. Right now, prices are pretty low on the farm. I can't see that reflected in the price at the store all that much. Beef, at the farm level, was record high a couple of years ago. It's still pretty good, but has declined. I don't buy meat in the store because I can't afford it, but, last time I looked it was still awfully high in the store. The price decreases on the farm don't seem to have been passed along. (I get that there's a lot that goes into those prices besides what gets paid to the farmer, just wanted to point out that price increases aren't evenly distributed along the supply chain.)
We have a rather byzantine way of pricing milk in this country. (It's subsidized based on how far the farm is away from a small town in WI. I'm not kidding. You get paid more for milk produced in CA than for milk produced in the Midwest. Which is at least part of the reason there are huge dairy farms in CA, and area that really isn't cut out for cows, considering limitations on available water and competition with people for living space etc. This pricing scheme has been around a long time. The original idea was to spread dairy production around the country. And, once upon a time, it might have made a little sense.....)
Here's a graph I found easy to read and someone might find useful
http://www.usinflationcalculator.com/inflation/current-inflation-rates/
I was looking for an explanation of how the CPI is calculated and haven't found it. (At least not in a form I could make sense of.) I remember hearing some things about it that struck me as odd. Like it doesn't include things that real people really NEED to spend money on. (?) I also remember hearing something that I believe
@Fadeaway referred to awhile back. It had to do with calculating the effect price increases have on people. What I remember is they had built in to their calculator that, if hamburger costs more, people will switch to pork, it that costs too much, the switch to chicken, and so on until we're at the peanut butter and cat food level. I can't remember what this actually was about. I just remember thinking it was an odd way to look at things. (OK "odd" wasn't the word I used at the time.) I wish I could remember more about this. I THINK it was something they were factoring in when trying to decide about cost of living increases for people on social security, but I'm not sure.
And, here's a link to an article about 'real wages' in the US, over time.
http://www.pewresearch.org/fact-tank/2014/10/0/for-most-workers-real-wages-have-barely-budged-for-decades/
I'm sure that is calculated in a byzantine way too, but my real life experience suggests it's accurate. It's like
Alice in Wonderland. You have to run as fast as you can to stay in one place, faster if you want to get anywhere.