sentences:  In October 2016, the index broke 2,000 points, the highest level since March 2013.Stocks have to be traded in more than 90% of the total number of trade days in the selected time period in order to be included into CROBEX.The stock ranking is determined by weighing the stock's free float market capitalization as a proportion of the total, and its traffic as a proportion of the total share traffic in the six-month time period observed.