/*
** Lesson 3.5: Structural Change
*/
use gpe2;
output file = gpe\output3.5 reset;
load data[40,6] = gpe\cjx.txt;

year = data[2:40,1];
X = ln(data[2:40,2]);
L = ln(data[2:40,3]);
K = ln(data[2:40,5]);
call reset;
_names = {"X", "L", "K"};
call estimate(X,L~K);     @ whole sample @

_begin = 1; 	 @ sub-sample: 1929-1948 @
_end = 20;
call estimate(X,L~K);

_begin = 21;     @ sub-sample: 1949-1967 @
_end = 39;
call estimate(X,L~K);
end;