SP2013 , Control Templates ctx.ListData.ResultTables Not available in IE 11

I am trying to fetch the total count of result items in my content search webpart’s Control template using the code:

ctx.ListData.ResultTables[0].ResultRows.length

Now this line works perfectly in Chrome but in IE 11 , ctx.ListData object does not have ResultTables property and it fails. Any idea if i am missing anything or any work around?

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