It is true that a significant number of Indian Jews have emigrated to Israel, the United States, Canada, Australia, and the United Kingdom since 1947, but the reasons for this population decline remain controversial. The literary works that have emerged from the Indian Jewish community, including fiction, drama, poetry, and young adult literature, tell many and complicated stories about the community – and its decline. The historical Bene Israel community in western India has produced the majority of contemporary Indian Jewish fiction. While the Bene Israel community in India has seen the greatest population decline (from around 20 000 people in 1948 to less than 5000 people today), it is still the most vibrant and well-organized in India and beyond the subcontinent.
Source: https://www.cafedissensus.com/2014/12/31/the-indian-jewish-fiction/