 <translate> Give the step-by-step reasoning process and then the final answer. 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? <yor> Ṣàlàyé bí wọ́n ṣe ń ronú lẹ́ẹ̀kan-lẹ́ẹ̀kan, kó o sì wá sọ ìdáhùn tó o máa fún wọn. Nǹkan bí ènìyàn 450 000 ló ń gbé ní Maryville ní ọdún 2000. Ní ọdún 2005, nǹkan bí ènìyàn 467 000 ló ń gbé ní Maryville. Kí ni ìpíndọ́gba iye àwọn tó ń di púpọ̀ sí i lọ́dọọdún? 