I saw some stats a while ago, I think uncut > cut in the US with babies in the last few years so when that generation reach sexual maturity, there will be more guys packing uncut meat than cut. In Europe / Australia etc. it's really only babies that get cut for religious reasons, so the percentage would be whatever the Jewish/Muslim percentage was (<10% maybe?). Back in the '40s and '50s, Christian babies were getting cut but it died out in a generation whereas for some reason it persisted in the US.