The time-series chart shown below displays trends for presidential election voting rates by race and Hispanic origin for 1966–

2012. Analysts noted how for the first time in the 2012 Presidential election black voting rates exceeded the rates for nonHispanic whites. Overall, votes cast were higher in 2012 than 2008 (131,948,000 vs. 131,144,000—data not reported in the figure), an increase attributed to minority voters. Describe the variation in voting rates for the four racial and Hispanic origin groups.

Source: Thom File, The Diversifying Electorate—Voting Rates by Race and Hispanic Origin in 2012 (and other recent elections), Current Population Survey P20-568, 2013, Figure 1.