The country should adopt an 'India-Plus Contribution Scorecard' to promote foreign direct investment (FDI) by rating investors on measurable economic contributions such as productivity, exports and technology transfer, while maintaining stringent national security safeguards, a report has suggested. With the Indian economy crossing USD 4 trillion, the country must develop the institutional capacity to pursue rooted, contribution-generating investment, the report prepared by VeK Research and Pahle India Foundation said.