Shane would like her business to sell an average of $5,000 of jewelry every month; however, her industry is very seasonal, with the end-of-the-year holiday season being the busiest time. In 2010 her sales were as follows: January $3,000, February $2,500, March $4,000, April $3,500, May $4,500, June $5,000, July $6,000, August $7,000, September $6,500, October $5,000, November $8,000, December $10,000. What was the average monthly sales for 2010?