BMW of North America, Inc. continued its record-breaking sales streak in June, reporting sales of 15,334 vehicles, an increase of 6 percent compared to 14,476 for the same period a year ago. It is the 21st consecutive month the company has broken the previous year's sales performance. Year-to-date sales skyrocketed to 26 percent to 98,783 compared to 78,103 in 1999.