The U.S. tops the Grant Thornton International Super Growth Index for the third year running. 44% of US companies hit 'super growth' status, an increase of 5% over the previous year. The Index measures the country with the highest proportion of "super growth" companies.

This year Armenia (38%) has replaced India in second position.

'Super growth' companies are defined as those which have grown considerably more than average. To identify 'super growth' companies, Experian Business Strategies, the economics consultancy, took four key indicators to create a weighted index. The four indicators were: absolute growth in turnover (adjusted for inflation); the percentage growth in turnover (adjusted for inflation); absolute growth in employee numbers; the percentage growth in employee numbers. By this measure, 23% of all privately held businesses surveyed worldwide are classified as 'super growth'.