curl --request GET \
  --url https://api.bunny.net/storagezone/{id}/statistics/egress \
  --header 'AccessKey: <api-key>'

{
  "HttpEgressChart": {},
  "S3EgressChart": {},
  "S3PresignedEgressChart": {},
  "FtpEgressChart": {},
  "SftpEgressChart": {},
  "TotalEgressChart": {},
  "HttpEgressTotal": 123,
  "S3EgressTotal": 123,
  "S3PresignedEgressTotal": 123,
  "FtpEgressTotal": 123,
  "SftpEgressTotal": 123,
  "TotalEgress": 123
}