Table 2. Quantitative analysis of the growth of indexed items and related references across several countries over the period of 2002-2013.
| Country | 2002 | 2013 | ||||||
|---|---|---|---|---|---|---|---|---|
| Total journals | Total docs | Total refs | Refs/doc | Total journals | Total docs | Total refs | Refs/doc | |
| Netherlands | 1,341 | 125,035 | 3,459,574 | 30.1 | 1,839 | 230,393 | 8,773,836 | 40.9 |
| UK | 3,646 | 285,197 | 7,812,578 | 29.7 | 5,411 | 531,491 | 19,203,587 | 39.8 |
| USA | 4,852 | 481,126 | 11,743,853 | 24.6 | 6,035 | 735,079 | 23,920,449 | 35.8 |
| Germany | 884 | 74,413 | 1,743,192 | 27.8 | 1,336 | 219,677 | 5,199,750 | 33.9 |
| Greece | 13 | 2,345 | 50,352 | 25.4 | 65 | 7,036 | 212,521 | 28.5 |
| Italy | 295 | 13,084 | 274,784 | 19.7 | 487 | 26,728 | 711,718 | 27.1 |
| Croatia | 64 | 1,999 | 38,409 | 18.3 | 135 | 4,918 | 132,708 | 26.8 |
| Turkey | 55 | 2,068 | 42,617 | 17.1 | 178 | 10,427 | 255,302 | 24.8 |
| Iran | 8 | 296 | 5,474 | 19.0 | 133 | 6,896 | 184,214 | 23.4 |
| Korea | 50 | 3,980 | 79,108 | 16.3 | 193 | 18,258 | 418,531 | 23.4 |
| India | 176 | 11,060 | 171,727 | 14.2 | 451 | 44,009 | 896,896 | 20.7 |
| China | 415 | 42,592 | 299,405 | 5.7 | 567 | 113,433 | 2,067,933 | 18.5 |
| Japan | 460 | 34,851 | 586,172 | 16.1 | 503 | 40,728 | 765,815 | 17.9 |
| Russian Federation | 264 | 36,978 | 368,851 | 11.3 | 219 | 22,443 | 380,465 | 17.9 |
The findings were obtained from the SCImago Journal & Country Rank platform on August 26, 2015 (http://www.scimagojr.com/journalrank.php). Ranking of countries is based on values of references per document (refs/doc) in 2013.