Google SWE Interns 25 PPO Conversion Rate

How many Google SWE Interns were there in May to Sep 2025? And how many got PPO? I heard in Google cloud a lot of people didn't get ppo. Are there any numbers or approximate count of number of interns and number of ppos in cloud? Also they said people having good feedback were also rejected, was this specific to certain teams/orgs alone or common across google cloud?