Brand   Time    Sale
A       1       12
A       2       15
A       3       10
A       4       10
B       1       12
B       2       32
B       3       15
B       4       30
C       1       8
C       2       9
C       3       12
C       4       15

proc sgplot data=work.summary;
series x=year y=sale_amt / group=brand;
run;

proc sgplot data=sashelp.stocks;
series x=date y=open / group=stock;
run;