Note the light blue line for 2016, on schedule to set new records across the whole year, up until we find ourselves with a president who sees criminals as a bigger threat than law abiding citizens.
The final total was 27,528,694 which, using the NSSF's fudge factor, suggests that we bought some 19,545,372 firearms last year. Congratulations to us! Now go buy some ammo and get better at shooting them. Lessee, that would be a minimum of 977,268,637 rounds.