Here is the chart. I wouldn't call $3B/year in 2012 dollars an extravagant amount of spending for a program, which is the level the authors call "moderate."
Thanks. I'll have to brush up on the details of this report, it's been a while.
I read recently that in total, the US has spent about $50 billion dollars on fusion energy generation research over the years. Regardless of the chart's usefulness, that puts us in the "fusion never" realm of the chart.
https://commons.m.wikimedia.org/wiki/File:U.S._historical_fu...