Fifty years ago, corporate taxes accounted for 30% of all federal revenue. Now, that number has dropped to just 6.6%.

In this graphical wonderland from Online MBA, we take a look at how corporations have dodged ... er, optimized for lower taxes over the years.

From setting up overseas subsidiaries to adventures in "creative" finance, huge companies such as GE have made an art form of lowering the amounts they pay to Uncle Sam year over year. In fact, some of these companies even hire former IRS employees to find more (and more profitable) tax loopholes.

Take a look at this infographic, and in the comments, don't hold back — tell us how you really feel about corporate tax "minimization."

Click image to see full-size version.

[souce: OnlineMBA.com]