The strong returns of dividend growth stocks support my prediction that the Schwab U.S. Dividend Equity ETF (NYSEMKT: SCHD) can double by 2034, and pay you passive income as you wait. To calculate how long it would take the Schwab U.S. Dividend Equity ETF to double in value, we need to estimate the expected average annual total return. That's because dividend growth is a core aspect of this fund's investment strategy. Its current holdings have increased their dividends at an average annual rate of 9.4% over the last five years. At that rate, a $10,000 investment would produce $330 in annual passive income, in addition to the growth in SCHD's value.