請教8老師和newacct老師 I-864 part5

我的情況是給父母同時申請綠卡，I-864表 part 5裏我知道household size 應該是我和我先生再加父母，一共4。我在1，2，3裏都已經填上了1，想請問我還應該在5(If you have any other dependents, enter the number  here)裏填上1？還是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)裏填上1？

請老師指教。