I came across an interesting graphic that provides a great picture of our economy since the "Republican revolution" and introduction of Reagan's trickle-down economics:
Daily Kos has an excellent post on recent trends. An excerpt:
Basically, the basic bargain was roughly this--if you worked hard and became more productive, you would see that sweat of the brow in your wages. And from the post-war era until the 1970s, that deal basically held--as you can see from the lines that are basically close together until the 1970s. Then, the lines diverge--dramatically. You can see it yourself. If the lines had continued to track closely together as they did prior to the 1970s, the MINIMUM WAGE would be more than $19 an hour.