By Bret Kenwell AT&T has been crushed this year, down more than 40% from its high. But now the stock nears a key area on the charts with a 7% dividend yield. AT&T (T) – Get AT&T Inc. Report stock’s underperformance had been well documented even before the 2022 bear market. The stock is down 45% over the past five years, 44% over the past 10 and 57% this century. So what does everyone like about this company? Clearly, the dividend. Until this year, AT&T was a dividend star, having raised its payout for more than 30 consecutive years. It often had a big yield, too. That streak came to an end whe…