The World Economic Outlook (WEO) database is managed by our Research Department rather than the Statistics Department, so I am unfortunately unable to directly help you with your query. I recommend that you visit the Frequently Asked Questions page for the WEO to see if the answer to your question is there: https://www.imf.org/external/pubs/ft/weo/faq.htm
In case this webpage does not hold the answer to your question, I encourage you to submit your question by clicking the link on the left-hand side of the FAQ page where it says "Have a WEO Data Question? Please submit your question using Data Question Form."
We hope you find this information useful. Should you have any further questions please feel free to contact us.
Data Dissemination and Client Services Team
Data Operations Division
International Monetary Fund