Country music seems to continue to grow in popularity and country music stars seem to continue to get more and more successful. You likely know quite a few country stars but there are some that are raking in the money that you may not have ever heard of.If you've ever wondered which stars might be considered the most successful of all time, read on to find out who makes the list.Toby Keith has an estimated net worth of $500 million.Toby Keith is known for hits like "Should've Been A Cowboy" and "As Good As I Once Was," but beyond being a singer and songwriter, he also has his own chain of restaurants and other ventures, as Taste of Country noted. An outspoken conservative, Keith also performed at President Trump's inauguration concert and flew to Saudi Arabia to play a show, The Atlantic reported. Keith is worth an estimated $500 million, according to Forbes.Dolly Parton is a singer, TV star, and has her own amusement park.At 72 years old, Dolly Parton is well-known both within and outside the world of country music. Beyond being a singer and songwriter, Parton also has her own theme park, Dollywood, acts in movies and on TV, and more, according to Taste of Country. Dolly Parton is also worth an estimated $500 million, according to Celebrity Net Worth.Shania Twain is making a comeback.Shania Twain is well-known for hits like "Man, I Feel Like A Woman" and "Any Man Of Mine." According to Taste of Country, Twain's Las Vegas residency was a comeback of sorts for the artist after a sustained break. Shania Twain is worth a reported $400 million, according to Celebrity Net Worth.See the rest of the story at Business Insider Click here to read full news..