That lasted only 5 years. According to Wikipedia the first release was on June 11 2007 and the last one was on May 9 2012.
https://en.wikipedia.org/wiki/Safari_version_history
I found this press release from 2007 https://www.apple.com/uk/newsroom/2007/06/11Apple-Introduces...
“We think Windows users are going to be really impressed when they see how fast and intuitive web browsing can be with Safari”, said Steve Jobs, Apple's CEO. “Hundreds of millions of Windows users already use iTunes, and we look forward to turning them on to Safari's superior browsing experience too”.
History demonstrates that actually they didn't and Apple gave up quickly.
Interestingly they also have some benchmark
> [Safari] now it's the fastest browser on Windows, loading and drawing web pages up to twice as fast as Microsoft Internet Explorer 7 and up to 1.6 times faster than Mozilla Firefox 2 (*)
but by reading the more we learn that they benchmarked Safari on a Mac and the other two browsers on a Windows machine.