Rise, peak and decline

The number of migrants coming to the United States each year, legally and illegally, grew very rapidly starting in the mid-1990s, hit a peak at the end of the decade, and then declined substantially after 2001. By 2004, the annual inflow of foreign-born persons was down 24% from its all-time high in 2000, according to the Pew Hispanic Center analysis of multiple datasets collected by the Census Bureau and other government agencies. Rather than undergoing a continuous increase in immigrant levels as is commonly perceived, the United States experienced a sharp spike in immigration flows over the past decade that had a distinct beginning, middle and end. From the early 1990s through the middle of the decade, slightly more than 1.1 million migrants came to the United States every year on average. In the peak years of 1999 and 2000, the annual inflow was about 35% higher, topping 1.5 million. By 2002 and 2003, the number coming to the country was back around the 1.1 million mark. This basic pattern of increase, peak and decline is evident for the foreign-born from every region of the world and for both legal and unauthorized migrants. In 2004, migration bounced back to exceed 1.2 million. Whether or not this move portends further increases is impossible to predict. But even with this recent increase in migration, the most recent data show that immigration flows are at levels comparable with those of the mid-1990s and still significantly below the peak levels of 1999-2000.