David Bakula, Nielsen's senior vice president of insights, said the series is shrewdly marketed and timed, colorfully hogging up a lot of space at your nearest big box store at key times of year.
"They come out around gifting time," he said. "You get one in the fourth quarter around the holidays. You get one in the first quarter around the Easter gifting time. You get one in the summer when everybody is singing the biggest summer songs of the year."
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