Ann: ICSID Arbitration Proceedings, page-83

Case Outcomes
The outcome of cases at ICSID has been consistently balanced between States and investors—and 2022 was no different. Overall, 49% of cases concluded in 2022 were decided by tribunals and 51% were settled or otherwise discontinued.
Among cases decided by tribunals, 56% of awards upheld the investors’ claims in part or in full. Of the remaining share, 28% of awards rejected all of the investors’ claims on the merits, 8% of awards declined jurisdiction, and 8% of cases were dismissed for manifest lack of legal merit.

https://icsid.worldbank.org/news-and-events/communiques/icsid-releases-2022-caseload-statistics