Europe Neurodegenerative Disease Market Size, Share & Trends Analysis Report By Disease Indication (Multiple Sclerosis, Parkinson's Disease, Alzheimer's Disease, Others), By Drug Type (Immunomodulator, Vesicular Monoamine Transporter 2 (VMAT2), Others), By Routes of Administration (Oral, Intravenous (IV) delivery, Others) and By Country (U.K., Germany, France, Spain, Italy, Russia, Nordic, Benelux, Rest of Europ) Forecasts, 2026-2034