In the past five years, the percentage of money spent on discovering renewable yet expensive sources of energy has decreased  An increasing amount of money is being spent on developing nonrenewable resources, which are quite inexpensive to obtain  Regrettably, the nonrenewable resources have proven to be impracticable for daily use
Clearly, less money is being spent on practicable energy sources than was being spent five years ago
The cost of nonrenewable resources is expected to rise in the next five years.