BEGIN {OFS=FS="\t";big=999999999999999999;}#https://www.biostars.org/p/77347/
{
    if ( ($3=="transcript") ) {
    split($9,format,";");
    i=0;ok=0;gn="NA";
    for (i in format){
	if (format[i] ~ /transcript_biotype/){
	    gsub(/transcript_biotype "/,"",format[i]);
	    gsub(/"/,"",format[i]);
	    if (substr(format[i],1,1)==" "){bt=substr(format[i],2);}else{bt=format[i]};ok++;
	}
    }
    if (ok==1){
	obt[bt]++;
    }
    }
}END{
    for (bt in obt){
	print bt,obt[bt]
    }
 }