problem to summarize my variables by year

[nassim ouali]

I am new to stata, i need your help, i am trying to summarize all my variables by year (from 2002 to 2015)
but i only know how to summarize for one year in particular
like this :
sum if year ==2002

but is it possible to do this for every year ?
I joined my excel file that i used for stata
Thanks in advance

[Rich Goldstein]

first, as the FAQ requests (please read the FAQ), you should not attach excel files (or, in my opinion, any kind of non-graphic binary file)

second, try this:

bysort year: sum

[nassim ouali]

Thanks Rich