The stocks listed here all pay at least 3% in dividends and have been known to raise their payouts in the past.If you're in retirement or simply want some dividend income to rely on, it's important to focus on stocks that have strong financials and that may potentially boost their payouts in the future. The dividend growth can help to offset the effects of inflation down the road.Three stocks that offer high yields and that have historically been good income investments are Coca-Cola (KO -0.91%), Realty Inc ...