A library records the number of times a particular book is borrowed each month for a year. Over the past year, the book was borrowed 5 times in January, 8 times in February, 7 times in March, 6 times in April, 10 times in May, 9 times in June, 6 times in July, 5 times in August, 7 times in September, 8 times in October, 6 times in November, and 4 times in December. What is the average number of times the book was borrowed per month over the year? Let's think step by step and output the final answer within \boxed{}.
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