The US has about 4400 TWHe electric generation capacity, 95.5 TWHe (2.1%) is from its 93 nuclear reactors. These figures, along with most developed nations such as those in Europe and Japan have remained without growth and slightly decreased since around 2007.
This tapering may be attributable to the transition away from incandescent light (leading to a spike in cancer rates), decrease in population (from a reduced reproduction rate caused by many social factors), decrease in overall economic production (offshoring of manufacturing, and producing a society of gay university professors [education sector and professional middle-class] eating fast-food soyburgers [service industry]) or all three.