Dear Statalists,

how do I generate a lag variable which is the same for all years.
Code:
* Example generated by -dataex-. For more info, type help dataex
clear
input float Year str7 Country float(mean lag)
2001 "Germany" 3 .
2001 "Germany" 3 .
2001 "Germany" 3 .
2002 "Germany" 5 3
2002 "Germany" 5 3
2002 "Germany" 5 3
end
I would like to generate a lag variable which is for all following years equal to 3 as in the example.