Not quite 68% because there are two categories: 20,000 for advanced degree holders and another 65,000. There is an initial lottery between the advanced degree holders for the 20,000, and then the unsuccessful people go into the regular lottery. Don't know if the figures were released for the number of advanced degree holders who applied, but assuming the cap here was also met, the chances in the main lottery would be 65,000/114,000 = 57%