Table 1.
Yr | Distribution of co-author articles |
Total (articles) | Authors | Cooperation degree | Cooperation rate (%) | ||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | > 11 | |||||
2001 | 9 | 18 | 20 | 33 | 26 | 20 | 20 | 14 | 5 | 2 | 6 | 173 | 884 | 5.11 | 94.80 |
2002 | 2 | 20 | 23 | 44 | 35 | 39 | 30 | 20 | 10 | 2 | 11 | 236 | 1313 | 5.56 | 99.15 |
2003 | 7 | 30 | 65 | 88 | 131 | 110 | 79 | 55 | 25 | 22 | 21 | 633 | 3637 | 5.75 | 98.89 |
2004 | 12 | 47 | 82 | 112 | 146 | 154 | 105 | 71 | 43 | 25 | 29 | 826 | 4755 | 5.76 | 98.55 |
2005 | 13 | 59 | 113 | 188 | 243 | 273 | 202 | 154 | 86 | 56 | 109 | 1496 | 9434 | 6.31 | 99.13 |
2006 | 46 | 111 | 149 | 169 | 210 | 191 | 150 | 119 | 74 | 57 | 106 | 1382 | 8160 | 5.90 | 96.67 |
2007 | 48 | 107 | 129 | 148 | 158 | 139 | 120 | 83 | 48 | 59 | 66 | 1105 | 6232 | 5.64 | 95.66 |
Total | 137 | 392 | 581 | 782 | 949 | 926 | 706 | 516 | 291 | 223 | 348 | 5851 | 34415 | 5.88 | 97.66 |