Last year I put $40,000 in several USAA mutual funds, 12 months later I have $51,000. Is that a good return?

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I have not put in any more money from the original investment, so the increase is due to reinvestment of dividends & stock value increases, right? I'm just wondering if I'm getting a good return, or should I expect better? Thank you for any advice?

Last year I put $40,000 in several USAA mutual funds, 12 months later I have $51,000. Is that a good return?