This is about Market Size.

The Global Competitiveness Index (10th pillar: market size) in detail (2015-2016):

1. Domestic market size index, 1–7 (best)* …………….. 4.0 …………54
2. Foreign market size index, 1–7 (best)* ……………….. 4.6 …………66
3. GDP (PPP$ billions)* …………………………………… 242.0 …………58
4. Exports as a percentage of GDP* …………………… 23.7 ……….113

Reference

http://www3.weforum.org/docs/gcr/2015-2016/Global_Competitiveness_Report_2015-2016.pdf