On the other hand, global investments routed through Mauritius to Africa, Europe, Americas and some Asian countries have gone up, as per the latest official data compiled by the island nation's financial sector regulator FSC.
Negotiations to amend the Indo-Mauritius tax treaty have been hanging fire for a long time amid India's apprehensions that it is being misused to route unaccounted money and evade taxes.
While Mauritius says it has strict checks and balances in place, uncertainties over the tax treaty have adversely affected investment flows between the two nations.
In 2010, India's share was as high as 32.27 per cent, before declining to 23.25 per cent in 2011 and further to nearly 15 per cent in 2012. In comparison, Africa's share has been consistently rising from 30 per cent in 2011, to over 40 per cent in 2011 and about 51 per cent in 2012.
More From This Section
Financial Services Commission (FSC) is the integrated regulator for all non-banking financial services and global business sectors in Mauritius.
The data pertain to Global Business Companies (GBCs), entities that are licensed to operate in Mauritius by the FSC.
However, Mauritius says that India remains an important partner for Mauritius and it has been closely following policy developments concerning the two countries.
Late last year, FSC Chief Executive Officer Clairette Ah-Hen had said that some new investors are not exploring investment opportunities offered by Mauritius as a gateway to India due to tax pact-related concerns.
Last month, FSC's newly appointed Indian-origin Chairman Rajeshsharma Ramloll also said that a quick resolution of issues related to Indo-Mauritius tax treaty would not only benefit the two nations but also boost investor confidence and ensure certainty.
During his India visit in May to attend Prime Minister Narendra Modi's swearing-in ceremony, Mauritius' Indian-origin Prime Minister Navin Ramgoolam had also said the island nation has decided to provide automatic exchange of tax related information with India.