Assume you invest $150 per month in a stock. Stock prices are as follows: January $10.50, February $9.75, March $9.50, April $11.00, May $10.75, June $9.75, July $9.00, August $8.50, September $10.75, October $11.20, November $10.75,and December $12.50. Which of the following is the correct percent gain for the year?