There is no conversion chart, unfortunately, but I’d like to help you out, Matan. I’m not a man, but since I’m not discussing Gemara, it should be ok.
A venerable poster suggested an excellent idea on an old thread. It all depends who has the most pictures in the paper in a given time period. The algorithm used in making the determination scrolls back issues of the NYT, The Press, The Yated, Kol Ha’Oilom Kuloi, Mishpacha, Ami, and the 5 Towns Times.
Hope that helped.