Table:
text: 1969 World Judo Championships
Medals table
Medals table
Rank_ Nation Gold Silver Bronze Total
1 Japan 6 3 3 12
2 Germany 0 2 0 2
3 Netherlands 0 1 2 3
4 Soviet Union 0 0 4 4
5 South Korea 0 0 3 3

Question: What is the average number of gold medals at the 1969 World Judo Championships for a country with more than 12 medals total?