The following data sets and macro variables contain the input data that are used in this example:

data industry_data;
   input industry $9. init_stocks init_productive_capacity demand;
   datalines;
coal      150 300 60
steel      80 350 60
transport 100 280 30
;

data production_data;
   input input $9. coal steel transport;
   datalines;
coal      0.1 0.5 0.4
steel     0.1 0.1 0.2
transport 0.2 0.1 0.2
manpower  0.6 0.3 0.2
;

data productive_capacity_data;
   input input $9. coal steel transport;
   datalines;
coal      0.0 0.7 0.9
steel     0.1 0.1 0.2
transport 0.2 0.1 0.2
manpower  0.4 0.2 0.1
;

%let manpower_capacity = 470;
%let num_years = 5;