Students are forced to get student loans and grants from the federal government and get personal loans and/or credit cards to cover living expenses and books. According to Nellie Mae's 2002 national student loan survey, those who used credit cards to pay for part of their education reported a median credit card balance of $3,400, but the average undergraduate debt is $21,200 after all four years. Students attending graduate school borrow, on average, an additional $31,700 beyond their undergraduate borrowing. Law and medical student borrowers report an average accumulated debt from all years (undergraduate and graduate study) of $91,700. Graduates with a median credit card balance of $1,600 at an interest rate of 15 percent -- not unheard-of for young people with a limited credit history -- would have to pay $78 every month for two years in order to retire the balance. If the $78 monthly payments were instead invested in a money market account yielding 2 percent, a savings cushion of $1,900 would result after two years.