Each fund’s rate of return (the amount that the fund grew or lost during the period) is calculated as a percentage of the starting amount. For example, if on January 1st, your account had $100 in it and at the end of the year it had $110, then your account would have grown by $10, which is 10% per cent of the original amount.
Returns show gross (before) fees. Past performance of a fund is not necessarily indicative of future performance. 1-year, 3-year, 4-year, 10-year increments of return show the average annual returns for the indicated period. There is no 10-year history for funds with ‘n/a’ indicated.
The "Index" percentage is the market benchmark for the funds (where available).