Hey,
I want to create new observations for missing years.
For example, I have data on wages and months of work each year for each id.
For people that were unemployed I don't have any observation in that year.

Current data:

year months wage
2011 12 11000
2012 9 8000
2014 12 15000

The new required data:

year months wage
2011 12 11000
2012 9 8000
2013 0 0
2014 12 15000


any help would be appreciated,
Thanks,
Brit