<prompt> Translate the following text to EnglishWafanyakazi wa mashamba kutoka Colorado wanaishi katika maeneo ya karibu ya 16,000 hadi 40,000, kulingana na ripoti ya Shirika la Utafiti wa Nchi za Magharibi.  <response>: Migrant farm workers - 16,000 to 40,000 in Colorado, according to the U.S. 