SAS, switch rows and columns, for results - sas

Question

I would like to reformat my printed results, if there is a way.
What I got after running a proc means is:
Yearㅣ # ㅣ Variable ㅣ N ㅣMean
-------------------------------------
1991ㅣ x ㅣ AAAAA ㅣ x ㅣ x
1991ㅣ x ㅣ BBBBB ㅣ x ㅣ x
1991ㅣ x ㅣ CCCCC ㅣ x ㅣ x
1992ㅣ x ㅣ AAAAA ㅣ x ㅣ x
1992ㅣ x ㅣ BBBBB ㅣ x ㅣ x
1992ㅣ x ㅣ CCCCC ㅣ x ㅣ x
1993ㅣ x ㅣ AAAAA ㅣ x ㅣ x
1993ㅣ x ㅣ BBBBB ㅣ x ㅣ x
1993ㅣ x ㅣ CCCCC ㅣ x ㅣ x
I would like to change this result table so that 1991 1992 1993 are the columns
and I would like the rows presented as:
AAAAA
N
Mean
BBBBB
N
Mean
CCCCC
N
Mean
Thank you.

Answer 1

For displayed output (versus produced output data sets) you can use Proc TABULATE to easily arrange your presentation.
SASHELP.FISH is SAS sample data set that is likely the same kind of layout as your data.
Example:
Demonstration wise, in FISH the variable species would correspond to your YEAR
Compare and contrast MEANS output with TABULATE output. The numbers are the same but the presentation is different (stats in rows instead of columns).
proc means data=sashelp.fish n mean ;
class species;
var weight height width;
where species =: 'P'; * limit for demonstration;
run;
proc tabulate data=sashelp.fish;
title "Tabulate";
title2 font=courier "(weight height width) * (n mean) , species";
class species;
var weight height width;
table (weight height width) * (n mean) , species;
where species =: 'P'; * limit for demonstration;
run;
will produce these two outputs

Answer 2

Try this. It might not be exactly what you want, but it probably comes close.
proc sort data=WHAT_I_HAVE;
by variable year;
proc transpose data=WHAT_I_HAVE out=WHAT_I_NEED;
by variable;
id year
var n mean;
run;
Disclaimer: this is untested code and might need debugging.