Figure Population 2 Annual Increase in Mexican- Bom Population That Entered the U.S in 1990 for Later Measured on a Quarterly Basis, 2005 to 2007
Across the eight quarters of 2005 and 2006, the annual increase in the Mexican immigrant population averaged 495,000 persons (Figure 2). To arrive at this estimate, each of the four quarters of 2005 were compared to the same quarters in 2004, and the four quarters of 2006 were compared to the same quarters in 2005. In other words, new immigration from Mexico, net of return migration and other smaller factors added an average of 495,000 people a year measured on a quarterly basis across the whole of 2005 and 2006. However, in the first quarter of 2007 the annual growth since the first quarter of 2006 dropped to 288,000 persons.
Figure Population 2  | Annual Increase in Mexican- Bom Population That Entered the U.S  | in 1990 for Later Measured on a Quarterly Basis, 2005 to 2007  | 735  | Thousands  | Average 2005 2006 : 495  | 599  | 590  | 546  | 490  | 420  | 404  | 288  | 175  | Jan. -Mar. Apr.-June July-Sep. Oct-Dec. Jan.- Mar. Apr--June July-Sep. Oct.- -Dec Jan.-Mar.  | 2005  | 2005  | 2005  | 2005  | 2006  | 2006  | July-Sep. 2006  | 2006  | 2007  | Note: The annual increase is the increase in population from the same quarter the previous year.  | Source: Pew Hispanic Center tabulations of Current Population Survey data 