Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Nation | Gold | Silver | Bronze | Total |
| --- | --- | --- | --- | --- | --- |
| 1 | United States | 12 | 13 | 6 | 31 |
| 2 | Russia | 10 | 5 | 6 | 21 |
| 3 | Australia | 8 | 12 | 6 | 26 |
| 4 | China | 7 | 4 | 8 | 19 |
| 5 | Germany | 5 | 6 | 5 | 16 |
| 6 | Japan | 3 | 3 | 3 | 9 |
| 7 | Netherlands | 3 | 2 | 2 | 7 |
| 8 | Great Britain | 2 | 3 | 3 | 8 |
| 9 | Ukraine | 2 | 3 | 2 | 7 |
| 10 | Italy | 2 | 2 | 1 | 5 |
| 11 | Canada | 2 | 0 | 1 | 3 |
| 12 | Hungary | 1 | 4 | 1 | 6 |
| 13 | Spain | 1 | 2 | 3 | 6 |
| 14 | Poland | 1 | 1 | 0 | 2 |
| 15 | France | 1 | 0 | 2 | 3 |
| 16 | Finland | 1 | 0 | 1 | 2 |
| 17 | Belarus | 1 | 0 | 0 | 1 |
| 18 | Czech Republic | 0 | 2 | 0 | 2 |
| 19 | Slovakia | 0 | 1 | 1 | 2 |
| 20 | Denmark | 0 | 1 | 0 | 1 |
| 20 | Croatia | 0 | 1 | 0 | 1 |
| 22 | Romania | 0 | 0 | 2 | 2 |
| 23 | Bulgaria | 0 | 0 | 1 | 1 |
| 23 | Mexico | 0 | 0 | 1 | 1 |
| 23 | Serbia and Montenegro | 0 | 0 | 1 | 1 |
| 23 | South Africa | 0 | 0 | 1 | 1 |
| 23 | Sweden | 0 | 0 | 1 | 1 |
| 23 | Tunisia | 0 | 0 | 1 | 1 |
| Total | Total | 62 | 65 | 59 | 186 |
Question:
how many more silver medals did the united states win compared to russia?
Answer:
8