TABLE 1.
Top 10 countries with respect to weighted degree, in-degree, and out-degree.
| 2001 | |||||
| Country | Degree centricity | Country | Out-degree | Country | In-degree |
| Germany | 6.69 | Germany | 5.34 | Germany | 3.96 |
| France | 4.51 | France | 4.18 | Italy | 3.14 |
| Netherlands | 4.40 | Netherlands | 3.93 | France | 2.58 |
| Italy | 3.56 | New Zealand | 3.02 | Netherlands | 2.36 |
| New Zealand | 3.03 | Belgium | 1.98 | Belgium | 2.36 |
| Belgium | 2.72 | Australia | 1.68 | United Kingdom | 2.11 |
| United Kingdom | 2.27 | Denmark | 1.64 | Spain | 1.32 |
| United States | 1.87 | Ireland | 1.30 | United States | 1.24 |
| Australia | 1.85 | Italy | 1.26 | Japan | 0.98 |
| Denmark | 1.66 | United Kingdom | 0.94 | Mexico | 0.95 |
| 2017 | |||||
| Germany | 6.80 | Germany | 5.48 | Germany | 4.59 |
| Netherlands | 5.41 | Netherlands | 5.09 | Mainland China | 3.18 |
| New Zealand | 5.12 | New Zealand | 5.04 | Netherlands | 2.57 |
| France | 4.65 | France | 3.86 | France | 2.55 |
| United States | 4.09 | Belgium | 2.06 | Belgium | 2.29 |
| Mainland China | 3.19 | Italy | 2.05 | Italy | 2.29 |
| Italy | 3.09 | United States | 2.04 | United States | 2.09 |
| Belgium | 2.86 | Ireland | 1.55 | Saudi Arabia | 1.37 |
| Saudi Arabia | 1.86 | Denmark | 1.53 | Sweden | 1.16 |
| Ireland | 1.82 | Belarus | 1.22 | Uruguay | 1.10 |