Proc SGplot overlaying line graph

[GS2]

Hello,

Below is the code for the data I have. I am trying to create a line graph with 2 lines showing the qrt_yr on the x-axis and the on the y-axis the number of events but I need the sum of the events cst and bta. My code currently only shows a max of 1 in the graph when, for example, q1-2010 cst should show 3 events. Var1 and Var2 are binary variables, where a 1 indicates the event occurred. Any advice would be helpful. Thank you 

data have;
	input qrt_yr $ var1 var2;
	datalines;
	q1-2010 1 0
	q1-2010 1 0
	q1-2010 1 1
	q1-2010 0 0
	q2-2010 1 0
	q3-2010 1 0
	q4-2010 1 0
	q1-2011 1 0
	q2-2011 0 1
	q3-2011 1 1
	q4-2011 0 1
	q1-2012 1 0
	q2-2012 1 0
	q3-2012 1 0
	q3-2012 1 1
	q4-0212 1 1
	q1-2014 1 1
	q2-2014 1 1
	q3-2014 1 1
	q3-2014 1 1
	q4-2014 0 1
	;
run;

proc sgplot data= have; 
	series x= qrt_yr y= var1; 
	series x= qrt_yr y= var2;	
run; 

[PaigeMiller]

After creating data set HAVE, run PROC SUMMARY to get the sums, and then run PROC SGPLOT on the output created by PROC SUMMARY.

[GS2]

Attached is my code for the proc summary. When I do this it returns the number of observations per quarter and year, I would like it to return the times var1=1 and the number of times var2=1 and plot both of those lines on a graph to see how they move in relationship to one another. Is there a way to modify this code to accomplish that. Thank you 

proc summary data= check8;
	class qrt_yr;
	var var1 var2;
	output out=check9;
run;