Congratulations to the old timers for a well deserved victory and hopefully the SP will continue to rise and reward them further.  I find the board helpful and knowledgeable and was wondering if they could help me with this question.

Has the composition of the countries participating in the trial changed from the phase two trials to the phase three trial. For instance China is now part of the trial and I was wondering if it participated in the the phase two trials and to what extent.  I am loooking for  the exact percentages of the populations  comprising this and previous trials. TIA