Dividend growth stocks are one of the best-kept secrets in the investing world. After all, these are high-quality companies with strong competitive advantages that allow them to generate rising earnings over time. As a result, most of these companies generate so much in excess cash flow that they are able to pay a higher dividend over time without sacrificing long-term growth.

Companies that raise dividends at a high rate could easily generate double-digit yields on cost for investors who bought early and at the right time.

The following dividend champions have the highest consistent dividend growth rates:

Lowe’s (NYSE:LOW), together with its subsidiaries, operates as a home improvement retailer in the United States and Canada. The company has boosted distributions for 49 years in a row. Ten-year annual dividend growth rate: 27.6%. Yield: 2.8%. (analysis)

McDonald’s (NYSE:MCD), together with its subsidiaries, operates as a worldwide foodservice retailer. The company has increased distributions for 35 consecutive years. Ten-year annual dividend growth rate: 26.5% Yield: 2.8%. (analysis)

Raven Industries (NASDAQ:RAVN) manufactures various products for industrial, agricultural, construction and military/aerospace markets in the United States and internationally. The company has boosted distributions for 25 years in a row. Ten-year annual dividend growth rate: 18.2%. Yield: 1.5%.

Wal-Mart (NYSE:WMT) operates retail stores in various formats worldwide. The company has increased distributions for 37 consecutive years. Ten-year annual dividend growth rate: 17.8% Yield: 2.8%. (analysis)