Sales of midlevel ethanol blends, from E15 to E69, increased more than 158 percent in 2013, totaling more than 5.4 million gallons sold in Iowa, according to a recent report from the Iowa Department of Revenue. Sales of E85 also hit an all-time high, with more than 11.1 million gallons sold, an increase of 18 percent over 2012. Biodiesel had a 21 percent increase in blended gallons sold in the state, with B10 sales increasing by 120 percent to 72.4 million gallons in 2013. Nearly half of the diesel sold in Iowa is now blended with biodiesel. The figures demonstrate that "Iowa motorists and retailers showed a serious commitment to higher-level ethanol and biodiesel blends in 2013," said Monte Shaw, Iowa Renewable Fuels Association executive director, in a press release. Iowa is working toward a goal of replacing 25 percent of all petroleum used to make gasoline with biofuels by 2020. In 2013, biofuels accounted for 10.8 percent of Iowa retail motor fuel, up from 10.2 percent in 2012.