Twenty-nine percent of CSRS investors in the survey and 36 percent of FERS investors said the TSP would be better if it offered a "window" through which investors could access mutual funds, another aspect of the proposed change. However, only 17 and 22 percent of respondents said they would personally invest some of their accounts in mutual funds, and only a tenth said they would be willing to pay an annual fee of $100 to use such an option. Under the bill language, investors would have to pay a fee for using the window, although the amount is unkown. Should the changes be enacted, it could be some time before the TSP decided how to carry out the authority, and even longer after that before any more funds actually became available.