The Michigan Comeback

The table below is courtesy of the Wall Street Journal.
What do suppose changed in 2011 that didn't change in Illinois?
The date coincides with when Republicans took over the legislature and the governor's office. More directly it coincides with the reduction in both business and individual tax rates and enactment of the Michigan Right To work law.

So the lesson is pretty clear. If you want to keep your slow growth, you can keep on giving control to Democrats. That's what the people of Illinois apparently want. The people of Michigan opted instead to give control of the state to pro-growth Republicans.