Since the cost of maintaining a virtual currency is extremely small, there is no practical limit. Of course, some small number will dominate. For a parallel situation, look at home many Linux distros there are: http://en.wikipedia.org/wiki/Lis... That can occur because one person, with enough free time, can package there own distro. But a handful of all distros represent the majority of all Linux installations.
According to the figures in the infographic Bill Gates has given $28 Billion to various charities since 2007, which apparently accounts for almost 48% of his net-worth. One of his biggest charitable efforts has been towards the eradication of malaria and an end to polio.
According to a report from the Washington Post from June of 2016, the NRA has donated a total of $87,850 to Michigan lawmakers. Here is a breakdown of the amount of money each Representative has received from the NRA up until 2016: Rep. Tim Walberg: $20,400 ; Rep. Bill Huizenga: $9,650 ; Rep, Mike Bishop: $2,000 ; Rep. Justin Amash: $1,000.