That was actually a bad year, as that "free" $21 million represented a loss of about $30 million. $1.17 billion on Jan 1st 2016 is equivalent to $1.22 billion a year later due to inflation. So they would have had to generate $50 million just to break even in actual buying power terms.
Is that based on not investing that $21 million or am I misreading something about how that money was or wasn't used?