<human>:  About 450 000 people lived in Maryville in 2000. In 2005, about 467 000 people lived in Maryville. What is the average number of people added each year?
<bot>: How many years did it take to add 5 people? ** The total increase of people was counted in 2005 - 2000 = <<2005-2000=5>>5 years.
How many people were added in 5 years? ** In 5 years, there is a total of 467 000 - 450 000 = 17 000 people increase.
How many people are added each year? ** So, each year, the average number of people added is 17 000/5 = 3 400.
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