Calculate projected total based on existing total in relation to historical data?

I'm trying to project a total number of transactions based on our place in the current year. If I know that today we are at 11% of the total sales season based on past year production, how do I calculate the estimated production total for the season? Let's assume we have had 22 transactions to date and we are 11% in the season. What will the total number of transactions be if we keep the same pace?|||200