| Year | Libraries | Research | Instruction | Support | Administration | Total |
| 2003 | 117 | 569 | 1215 | 2167 | 2259 | 6327 |
| 2004 | 125 | 606 | 1219 | 2122 | 2356 | 6428 |
| 2005 | 125 | 627 | 1297 | 2102 | 2583 | 6734 |
| 2006 | 129 | 670 | 1320 | 2058 | 2815 | 6992 |
| 2007 | 131 | 695 | 1410 | 2148 | 3005 | 7389 |
| 2008 | 140 | 711 | 1377 | 2213 | 3247 | 7688 |
| 2009 | 143 | 745 | 1377 | 2166 | 3307 | 7738 |
| 2010 | 135 | 795 | 1385 | 2050 | 3288 | 7653 |
| 2011 | 136 | 799 | 1430 | 1945 | 3386 | 7696 |
| 2012 | 148 | 828 | 1463 | 1931 | 3626 | 7996 |
| 2013 | 141 | 892 | 1514 | 2030 | 3761 | 8338 |
| 2014 | 140 | 881 | 1518 | 2015 | 3930 | 8484 |
| 2015 | 142 | 857 | 1529 | 1902 | 4118 | 8548 |
| 2016 | 138 | 854 | 1570 | 2217 | 3929 | 8708 |
| 2017 | 132 | 956 | 1599 | 2113 | 4383 | 9183 |
| 2018 | 138 | 1072 | 1643 | 2171 | 4572 | 9596 |
| 2019 | 140 | 1175 | 1667 | 2228 | 4761 | 9971 |
| 2020 | 134 | 1171 | 1602 | 2184 | 4764 | 9855 |
Sources: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Chart compiled by Michael Thaddeus, Professor of Mathematics, mt324@columbia.edu