I'm a fan of the Australian single transferable vote but that's difficult to do with a forum poll. I think I might reset the poll and leave two options
3,999,999,999 (4 billion)
8,000,000,000
Can add my suggestion 3,990,000,000 (=21million*190) on poll . for the number 3,999,999,999 ,we will still say NEM issued 4 billion in China.