| Year | Total | Affirmative | Defensive |
|---|---|---|---|
| 1990 | 8,470 | 5,670 | 2,800 |
| 1991 | 5,040 | 2,910 | 2,130 |
| 1992 | 6,310 | 4,120 | 2,180 |
| 1993 | 9,540 | 7,510 | 2,030 |
| 1994 | 13,830 | 11,780 | 2,050 |
| 1995 | 20,700 | 17,570 | 3,130 |
| 1996 | 23,530 | 18,620 | 4,910 |
| 1997 | 22,940 | 16,380 | 6,560 |
| 1998 | 20,510 | 13,220 | 7,290 |
| 1999 | 26,570 | 18,150 | 8,420 |
| 2000 | 32,510 | 23,280 | 9,240 |
| 2001 | 39,150 | 29,150 | 10,000 |
| 2002 | 36,940 | 25,960 | 10,980 |
| 2003 | 28,740 | 15,370 | 13,380 |
| 2004 | 27,380 | 14,350 | 13,020 |
| 2005 | 25,300 | 13,550 | 11,760 |
| 2006 | 26,350 | 13,050 | 13,300 |
| 2007 | 25,320 | 12,460 | 12,860 |
| 2008 | 23,020 | 12,130 | 10,890 |
| 2009 | 22,300 | 12,000 | 10,300 |
| 2010 | 19,780 | 11,260 | 8,520 |
| 2011 | 23,630 | 13,490 | 10,140 |
| 2012 | 27,450 | 16,870 | 10,580 |
| 2013 | 24,630 | 14,890 | 9,750 |
| 2014 | 23,040 | 14,420 | 8,610 |
| 2015 | 25,940 | 17,800 | 8,140 |
| 2016 | 20,310 | 11,610 | 8,700 |
| 2017 | 26,370 | 15,800 | 10,570 |
| 2018 | 37,690 | 24,490 | 13,200 |
| 2019 | 45,800 | 26,880 | 18,920 |
| 2020 | 30,710 | 16,100 | 14,610 |
| 2021 | 16,550 | 9,130 | 7,420 |
| 2022 | 35,720 | 13,170 | 22,550 |
| 2023 | 54,350 | 22,300 | 32,050 |
Footnotes
Notes: To protect privacy, table cells are rounded to the nearest ten. The totals may not sum due to rounding.
Source: Office of Homeland Security Statistics.
