The next assumption has to do with the annual energy use per capita. Here we can use the prediction that the annual Worldwide energy use per capita will rise from ~ 11 boe in 1995 to 15 boe in the year 2050. It is further assumed that the drive to improve the standard of living in under developed nations will continue to push up the overall energy use rate per capita from 15 boe in 2050 to 20 boe in 2100. Remember that the latter number is still 1/3 that of the present U. S. per capita use rate.
