Table:
text: Wheelchair tennis at the 2004 Summer Paralympics
Medal table
Medal table
Rank_ Nation Gold Silver Bronze Total
1 Netherlands (NED) 3 1 2 6
2 Great Britain (GBR) 1 1 0 2
2 United States (USA) 1 1 0 2
4 Japan (JPN) 1 0 0 1
5 Australia (AUS) 0 1 2 3
6 France (FRA) 0 1 1 2
7 Thailand (THA) 0 1 0 1
8 Switzerland (SUI) 0 0 1 1

Question: What is the lowest number of silvers held by a nation not ranked number 1 in wheelchair tennis at the 2004 Summer Paralympics?