100 nuclear plants were licensed and built in the 20 year heyday — average of 5 per year from 1960 to 1980. I haven’t kept up with global nuclear expansion — have that many been built globally the last 30 years? Is the experience in the U.S.? Or Japan?
"In 2007, the IAEA reported there were 439 nuclear power reactors in operation in the world,[3] operating in 31 countries.[4]" Wikipedia
There are 37 reactors currently under construction, and 40 more on order.
US companies built most of these. The companies may now be Japanese subsidiaries (I haven't kept track of changes of ownership, but a little digging will probably winkle it out), but the technology and engineers are largely American.