On a particular day, there were 22,490 trades in a particular futures contract. This means that there were 22,490 buyers and 22,490 sellers. Of the 22,490 sellers, 11,789 were closing out positions and 10,701 were entering into new positions. Of the 22,490 buyers, 12,970 were closing out positions and 9,520 were entering into new positions. What is the impact of the day's trading on open interest?