Table:
text: 1st AIBA European 2008 Olympic Qualifying Tournament
Medal table
Medal table
Rank_ Nation Gold Silver Bronze Total
1 Ukraine (UKR) 2 2 0 4
2 Belarus (BLR) 2 1 1 4
3 Hungary (HUN) 2 0 0 2
4 Ireland (IRL) 1 0 2 3
5 Bulgaria (BUL) 1 0 0 1
5 France (FRA) 1 0 0 1
5 Sweden (SWE) 0 0 0 1
5 Russia (RUS) 1 0 0 1
9 Great Britain (GBR) ENG 0 2 2 4
10 Azerbaijan (AZE) 0 1 1 2
10 France (FRA) 0 1 1 2
10 Moldova (MDA) 0 1 1 2
10 Poland (POL) 0 1 1 2
14 Croatia (CRO) 0 1 0 1

Question: What is the average number of silver medals at the 1st AIBA European Qualification Tournament for the Olympic Games 2008 if bronze is less than 0?