Lev3: WATER SCIENCE AND TECHNOLOGY//ANAEROBIC DIGESTION//ENGINEERING, ENVIRONMENTAL - Statistics for Countries |
Statistics per Country |
Number of publications, full counts |
| Obs | Country | 1990-1994 | 1995-1999 | 2000-2004 | 2005-2009 | 2010-2014 | All years |
|---|---|---|---|---|---|---|---|
| 1 | All countries | 156 | 186 | 236 | 330 | 399 | 1307 |
| 2 | United States | 47 | 60 | 51 | 66 | 82 | 306 |
| 3 | China | . | . | 24 | 66 | 93 | 183 |
| 4 | Canada | 51 | 29 | 20 | 22 | 16 | 138 |
| 5 | United Kingdom | 18 | 18 | 21 | 22 | 19 | 98 |
| 6 | Germany | 5 | 10 | 13 | 27 | 11 | 66 |
| 7 | France | 3 | 4 | 7 | 23 | 15 | 52 |
| 8 | Turkey | 2 | 3 | 18 | 16 | 12 | 51 |
| 9 | India | 1 | 4 | 3 | 15 | 27 | 50 |
| 10 | Japan | 1 | 6 | 11 | 16 | 15 | 49 |
| 11 | Italy | 8 | 5 | 4 | 7 | 21 | 45 |
| 12 | Taiwan | 1 | 4 | 17 | 12 | 9 | 43 |
| 13 | Korea, Republic of | 2 | 1 | 14 | 10 | 13 | 40 |
| 14 | South Africa | 5 | 16 | 3 | 12 | 3 | 39 |
| 15 | Greece | 3 | 9 | 1 | 5 | 10 | 28 |
| 16 | Sweden | 2 | 11 | 6 | 1 | 8 | 28 |
| 17 | Brazil | 1 | 2 | 9 | 9 | 6 | 27 |
| 18 | Austria | . | 1 | 3 | 5 | 15 | 24 |
| 19 | Spain | 2 | 5 | 5 | 4 | 8 | 24 |
| 20 | Netherlands | 2 | 5 | 2 | 3 | 9 | 21 |
| 21 | Poland | . | . | 5 | 4 | 9 | 18 |
| 22 | Australia | . | 3 | 5 | 1 | 5 | 14 |
| 23 | Belgium | 1 | . | . | 3 | 7 | 11 |
| 24 | Thailand | 1 | . | 1 | 8 | 1 | 11 |
| 25 | Finland | 1 | . | 1 | 5 | 2 | 9 |
| 26 | Mexico | . | 1 | 2 | 1 | 5 | 9 |
| 27 | Iran, Islamic Republic of | . | . | . | 2 | 6 | 8 |
| 28 | Lebanon | . | 2 | 3 | . | 2 | 7 |
| 29 | Denmark | . | . | 3 | 1 | 2 | 6 |
| 30 | Portugal | . | . | . | 1 | 5 | 6 |
| 31 | Ukraine | . | . | 1 | . | 5 | 6 |
| 32 | Czech Republic | 1 | 2 | . | 2 | . | 5 |
| 33 | Egypt | . | . | 3 | 1 | 1 | 5 |
| 34 | Hungary | . | . | . | 1 | 3 | 4 |
| 35 | Croatia | . | . | . | . | 3 | 3 |
| 36 | Jordan | . | 2 | . | . | 1 | 3 |
| 37 | New Zealand | . | . | 1 | . | 2 | 3 |
| 38 | Republic of Serbia | . | . | . | . | 3 | 3 |
| 39 | Romania | . | . | . | 1 | 2 | 3 |
| 40 | Russian Federation | . | . | . | 3 | . | 3 |
| 41 | Viet Nam | . | . | 1 | 1 | 1 | 3 |
| 42 | Argentina | . | . | . | 1 | 1 | 2 |
| 43 | Chile | . | . | . | . | 2 | 2 |
| 44 | Israel | . | . | . | 2 | . | 2 |
| 45 | Kuwait | . | . | . | 2 | . | 2 |
| 46 | Mauritius | . | . | . | . | 2 | 2 |
| 47 | Switzerland | . | . | 2 | . | . | 2 |
| 48 | Tunisia | . | . | . | 1 | 1 | 2 |
| 49 | Uruguay | . | 1 | 1 | . | . | 2 |
| 50 | Bangladesh | . | . | . | . | 1 | 1 |
| 51 | Bosnia and Herzegovina | . | . | 1 | . | . | 1 |
| 52 | Botswana | . | . | . | . | 1 | 1 |
| 53 | Bulgaria | . | . | 1 | . | . | 1 |
| 54 | Cyprus | . | . | . | 1 | . | 1 |
| 55 | Ethiopia | . | . | . | . | 1 | 1 |
| 56 | Ireland | 1 | . | . | . | . | 1 |
| 57 | Kenya | 1 | . | . | . | . | 1 |
| 58 | Malaysia | . | . | . | 1 | . | 1 |
| 59 | Norway | . | . | . | . | 1 | 1 |
| 60 | Pakistan | . | . | . | 1 | . | 1 |
| 61 | Philippines | . | . | . | . | 1 | 1 |
| 62 | Singapore | . | . | 1 | . | . | 1 |
| 63 | Sri Lanka | . | . | . | 1 | . | 1 |
| 64 | Togo | . | . | . | . | 1 | 1 |
| 65 | United Arab Emirates | . | . | 1 | . | . | 1 |
| 66 | Venezuela | . | 1 | . | . | . | 1 |
| 67 | Zambia | 1 | . | . | . | . | 1 |
Number of publications, full counts |