If I delete survey responses, will the 300 limit never be reached?

If I delete survey responses after I processed the answers, then my org will not have responses in the database, so the 300 limit never get surpassed. Is this viable? Or is it just incrementing a number after every response so the 300 limit will be reached. How the counting works exactly?

#Salesforce Survey  #Salesforce Survey Response  #Salesforce