Total earnings: $15 million

Salary/Winnings: $6 million

Endorsements: $9 million

Danica Patrick is racing full-time in the Nascar Sprint Cup series for the first time in 2013. She attracted widespread attention for winning the pole position at the Daytona 500 and finishing eighth in the race, which was the highest finish ever at Daytona for a female driver. She has appeared in a celebrity record 12 Super Bowl commercials over the last seven years for Go Daddy, which is the primary sponsor of her Sprint Cup car.

NASCAR Sprint Cup Series Driver Danica Patrick signs autographs for her fans at GoDaddy's garage at the Auto Club Speedway in Fontana, California, March 23, 2013. [Photo/icpress.cn]