Nwhich year did texas have the highest percentage of registered voters participate in the presidential election?

In the year of twenty-twelve (2012), the percentage of black citizens who voted in Texas exceed the percentage of white. 
Non-Hispanics who voted. And the black turnout was extreme in the 2010 midterm elections. The minorities tend to register and to vote in smaller balance than Anglos or Non-Hispanic whites.

An attractive economy.