Code:
     +----------------------------------------+
     |     country   year   dbagdp   pcrdbgdp |
     |----------------------------------------|
  1. | Afghanistan   2015     3.60       3.59 |
  2. | Afghanistan   2016     3.49       3.48 |
  3. |     Albania   2015    61.22      36.24 |
  4. |     Albania   2016    58.51      34.54 |
     +----------------------------------------+
I want to add year 2017 and 2018. How do I duplicate 2016 data for those years?
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str30 country int year double(dbagdp pcrdbgdp)
"Afghanistan" 2015 3.600882 3.591564
"Afghanistan" 2016 3.486549 3.477464
"Albania"     2015 61.22281 36.24135
"Albania"     2016 58.51335 34.54434
end