=IFERROR(SUMPRODUCT((TEXT('Overview - 2013'!$D$15:$D$9999,"mmmm")=B$3)*('Overview - 2013'!$J$15:$J$9999="yes"))/(SUMPRODUCT((TEXT('Overview - 2013'!$D$15:$D$9999,"mmmm")=B$3)*('Overview - 2013'!$J$15:$J$9999="yes"))+SUMPRODUCT((TEXT('Overview - 2013'!$D$15:$D$9999,"mmmm")=B$3)*('Overview - 2013'!$J$15:$J$9999="No")+('Overview - 2013'!$K$15:$K$9999="Yes"))),"")
Rather than look at specific month (one highlighted in black), I want to look at ALL months in the year 2014. How do I modify this formula to do this?