I read from a news article that North Korea is generally supported by a black market that the [government generally accepts](https://www.google.com/url?q=https://www.reuters.com/article/us-northkorea-change-insight/north-koreas-black-market-becoming-the-new-normal-idUSKCN0SN00320151029&sa=U&ved=2ahUKEwjowqe_jJfnAhUmiOAKHdXrDzgQFjABegQIBxAB&usg=AOvVaw3jJVCSitdV4vnZEwdqQ0Ab) . What percent of the economy is supported by this black market and how much money does the North Korean government get from this black market?