Global Penicillin Drug Market by Product (Bulk and Dosage), Type (Aminopenicillin, Antipseudomonal Penicillin, Beta-lactamase Inhibitor, Natural Penicillin, and Penicillinase-resistant Penicillin), Manufacturing Process (Synthetic Process, Natural Process, and Semisynthetic Process), Mode of Delivery (Oral, Intramuscular, and Intravenous), and End User (Hospitals, Clinics, Research Institutes, and Others), Regional Forecasts 2021-2027