List the top 3 exporting countries of soybeans.
The top three soybean exporting countries, as of 2021, are:

1. Brazil 
2. United States 
3. Argentina
Complete the following task based on the instruction and optional input provided.### Instruction:
List the top 3 exporting countries of soybeans.

### Output:
The top three soybean exporting countries, as of 2021, are:

1. Brazil 
2. United States 
3. Argentina