Beginning next year, a foundation will support an annual seminar on campus with the earnings of a $200,000 gift it received this year. It is felt that 6% interest will be realized for the first 10 years, but that plans should be made anticipate an interest rate of 4% after that time. What amount should be added to the foundation now to fund the seminar at the $20,000 level into infinity? The amount of additional funds should be $[] thousand. (Round to the nearest whole number.)