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Fraction of HIA pledges still active in 2024?

High Impact Athletes is a new organisation set up by professional tennis player Marcus Daniell, which aims to spread effective giving in professional sport. After launching at the end of November, their website now lists 20 professional athletes who have taken the pledge.

Two questions about the success of their first year are: Total donated by HIA athletes by end of 2021? Number of HIA pledges by end of 2021?

This question asks:

What fraction of athletes who take the pledge before the end of 2021 will maintain it through the end of 2024?

To count as having taken the pledge, athletes must commit to donating at least 2% of their earnings to effective charities. Resolution will be according to data from HIA themselves, who have been involved in this question's development. A current list is available here, but at the time of question writing it is updated manually, so it is not guaranteed to remain perfectly up to date.

If HIA ceases to exist for any reason, this question will resolve as 0, not as ambiguous.

For athletes to count as having taken the pledge before 2021, they must be counted in this question. For them to count as still active at the end of 2024, they must have maintained at least their original commitment continuously until the end of 2024.


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