请教8老师和newacct老师 I-864 part5

我的情况是给父母同时申请绿卡，I-864表 part 5里我知道household size 应该是我和我先生再加父母，一共4。我在1，2，3里都已经填上了1，想请问我还应该在5(If you have any other dependents, enter the number  here)里填上1？还是6(If you have sponsored any other persons on Form I-864 or Form I-864EZ who are now lawful permanent residents, enter the number here)里填上1？

请老师指教。