how many nations won at least 10 silver medals?
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col : rank | nation | gold | silver | bronze | total row 1 : 1 | russia | 8 | 12 | 10 | 30 row 2 : 2 | china | 7 | 4 | 2 | 13 row 3 : 3 | ukraine | 7 | 1 | 1 | 9 row 4 : 4 | poland | 3 | 4 | 2 | 9 row 5 : 5 | belarus | 2 | 2 | 2 | 6 row 6 : 6 | germany | 2 | 1 | 2 | 5 row 7 : 6 | south africa | 2 | 1 | 2 | 5 row 8 : 7 | australia | 2 | 1 | 1 | 4 row 9 : 8 | japan | 2 | 0 | 1 | 3 row 10 : 9 | france | 1 | 3 | 0 | 4 row 11 : 10 | romania | 1 | 2 | 2 | 5 row 12 : 11 | hungary | 1 | 2 | 1 | 4 row 13 : 12 | great britain | 1 | 1 | 2 | 4 row 14 : 12 | spain | 1 | 1 | 2 | 4 row 15 : 14 | morocco | 1 | 1 | 1 | 3 row 16 : 15 | brazil | 1 | 0 | 3 | 3 row 17 : 16 | czech republic | 1 | 0 | 2 | 3 row 18 : 17 | moldova | 1 | 0 | 0 | 1 row 19 : 18 | finland | 0 | 2 | 1 | 3 row 20 : 19 | estonia | 0 | 1 | 1 | 2 row 21 : 19 | north korea | 0 | 1 | 1 | 2 row 22 : 19 | south korea | 0 | 1 | 1 | 2 row 23 : 22 | denmark | 0 | 1 | 0 | 1 row 24 : 22 | ireland | 0 | 1 | 0 | 1 row 25 : 22 | jamaica | 0 | 1 | 0 | 1 row 26 : 22 | kazakhstan | 0 | 1 | 0 | 1 row 27 : 22 | uganda | 0 | 1 | 0 | 1 row 28 : 27 | croatia | 0 | 0 | 2 | 2 row 29 : 28 | canada | 0 | 0 | 1 | 1 row 30 : 28 | cyprus | 0 | 0 | 1 | 1 row 31 : 28 | italy | 0 | 0 | 1 | 1 row 32 : 28 | switzerland | 0 | 0 | 1 | 1
how many nations won at least 10 silver medals?
Rank Nation Gold Silver Bronze Total
1 Russia 8 12 10 30
2 China 7 4 2 13
3 Ukraine 7 1 1 9
4 Poland 3 4 2 9
5 Belarus 2 2 2 6
6 Germany 2 1 2 5
6 South Africa 2 1 2 5
7 Australia 2 1 1 4
8 Japan 2 0 1 3
9 France 1 3 0 4
10 Romania 1 2 2 5
11 Hungary 1 2 1 4
12 Great Britain 1 1 2 4
12 Spain 1 1 2 4
14 Morocco 1 1 1 3
15 Brazil 1 0 3 3
16 Czech Republic 1 0 2 3
17 Moldova 1 0 0 1
18 Finland 0 2 1 3
19 Estonia 0 1 1 2
19 North Korea 0 1 1 2
19 South Korea 0 1 1 2
22 Denmark 0 1 0 1
22 Ireland 0 1 0 1
22 Jamaica 0 1 0 1
22 Kazakhstan 0 1 0 1
22 Uganda 0 1 0 1
27 Croatia 0 0 2 2
28 Canada 0 0 1 1
28 Cyprus 0 0 1 1
28 Italy 0 0 1 1
28 Switzerland 0 0 1 1
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