This says 767,000 and ~29,000:<p><a href="https:&#x2F;&#x2F;www.aamc.org&#x2F;download&#x2F;426242&#x2F;data&#x2F;ihsreportdownload.pdf" rel="nofollow">https:&#x2F;&#x2F;www.aamc.org&#x2F;download&#x2F;426242&#x2F;data&#x2F;ihsreportdownload....</a><p>So that takes the coarse estimate down to 25 years.