The number of CrossFit-affiliated gyms grew quickly: there were 13 gyms in 2005, 8,000 in 2013, and more than 13,000 in 2016. By 2018, there were around 15,500 CrossFit gyms in 162 countries. Its membership worldwide has been estimated to between two and five million. However, the COVID-19 pandemic forced the closure of around 20% of its gyms (around 25% in the US), and disaffiliations due to the Glassman controversy in 2020 further reduced the number of paid affiliations to 9,400 by early 2021. The number has since recovered to around 12,500 including non-paying affiliates (10,800 paying) by early 2022.