At its height, "Peanuts" was published daily in 2,600 papers in 75 countries, in 21 languages. Over nearly 50 years, Schulz drew 17,897 published "Peanuts" strips. The strips, plus merchandise and product endorsements, produced revenues of more than $1 billion per year, with Schulz earning an estimated $30 million to $40 million annually. During the strip's run, Schulz took only one vacation, a five-week break in late 1997 to celebrate his 75th birthday; reruns of the strip ran during his vacation, the only time that occurred during Schulz's life.