Thanks to today’s announcement that Pfizer Inc. (NYSE: PFE) and Allergan plc (NYSE: AGN) agreed to a $160 billion merger, 2015’s total for health care mergers and acquisitions now stands at $549.4 billion. That’s 42% higher than last year’s full total of $387 billion, an amount we thought would stand for at least a few years. Deal volume for the year is now about 1,285, just 2% below last year’s record of 1,312 transactions. And there’s still a month left to go in 2015. Stay tuned.