Table 1.
Average citation counts of publications published in 1999 in seven subject categories
| No of pub. | Average number of citations per publication by the end of | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | ||
| Biochemistry & molecular biology | 45,721 | 0.5 | 3.4 | 7.3 | 11.0 | 14.5 | 17.9 | 20.9 | 23.8 | 26.4 | 28.9 |
| Cardiac & cardiovascular systems | 11,332 | 0.3 | 2.0 | 4.7 | 7.4 | 10.0 | 12.6 | 14.9 | 17.0 | 19.1 | 20.9 |
| Chemistry, analytical | 13,887 | 0.1 | 1.1 | 2.5 | 4.0 | 5.5 | 7.0 | 8.5 | 10.0 | 11.4 | 12.7 |
| Economics | 7,346 | 0.1 | 0.5 | 1.2 | 2.0 | 3.0 | 4.1 | 5.3 | 6.5 | 7.9 | 9.4 |
| Mathematics | 12,450 | 0.0 | 0.2 | 0.5 | 0.8 | 1.2 | 1.6 | 2.1 | 2.5 | 2.9 | 3.4 |
| Physics, applied | 24,675 | 0.1 | 0.7 | 1.7 | 2.8 | 3.9 | 4.9 | 6.0 | 7.0 | 8.0 | 8.8 |
| Surgery | 22,230 | 0.1 | 0.9 | 2.4 | 3.9 | 5.4 | 6.9 | 8.3 | 9.6 | 11.0 | 12.3 |