If you're looking for a top dividend stock to own, you want to be sure to consider whether it increases its payout and keep track of how quickly it normally does so. The rate of increases can be key to ensuring that inflation isn't eating up your dividend income over time. It also demonstrates to investors just how committed the company is to increasing the dividend.Three stocks that pay dividends and have been among the most generous when it comes to raising their payouts include UnitedHealth Group (UNH -0 ...