Assets under management with the mutual fund industry jumped a whopping 41 per cent in fiscal 2021 to Rs 31.43 lakh crore, despite a minor 1 per cent decline in March, says a report.The 1 per cent decline in assets on monthly basis in March was because of net outflows from open-ended debt funds, even though open-ended equity funds for the first time in June 2020 recorded net inflows, according to the industry data collated by Crisil on Friday.