Count instances of specific item w/Javascript

I'm working on pulling a list from sharepoint using the SPServices. The data loads fine, however I am trying to count the number of instances where a specific word/option is used. The data is something like:

"Name" : "George" , "Payment" : "CC"
"Name" : "Phillip", "Payment" : "CC"
"Name" : "Frances", "Payment" : "PO"
"Name" : "George",  "Payment" : "PO"
"Name" : "George",  "Payment" : "CC"

What I am trying to do is to count the number of instances where CC vs PO occurs for George. I've tried a couple things the only thing that kinda works - though it only displays '1' is:

for ( var i = 0; i< entries; i++) {
    if (Name == "George") {
       if (Payment == "PO") {
           ++POs;
       }
       if (Payment == "CC") {
           ++VCCs;
       }
    }
 }

This however returns: George 1 George 1 George 1

EDIT: Per request here is the display:

$('myTable").append(
 "<tr>" + "<td>" + Name + "</td>" +
 "<td>" + Pos + "</td>" +
 "<td>" + CCs + "</td>" +
 "</tr>"
 )