VSB error autogenerate worksheet from list

Hello,

So I have an excel that has mutiple worksheets
"2016 Census"
"Tracker Template"

What I did was use a code to automatically pull data from the census onto a template and autocreate new worksheet that follow that template.

So I have the following code:

Sub CreateSheetsFromAList()
Dim MyCell As Range, MyRange As Range

Set MyRange = Sheets("2016 Census").Range("A7")
Set MyRange = Range(MyRange, MyRange.End(xlDown))

For Each MyCell In MyRange
Sheets("Tracker Template").Copy After:=Sheets(Sheets.Count) 'creates a new worksheet
Sheets(Sheets.Count).Name = MyCell.Value ' renames the new worksheet
Next MyCell
End Sub

It works perfectly for the first time it is run. I have my first worksheet "2016 Census" and then I have a templated worksheet that a new worksheet is created from the list on 2016 Census.

My issue is that the "2016 Census" list gets updated regularly, so when I run the code after its already been run and all the worksheet have already been populated (for example, I add a name to the Census list and the code was ran previously so the other 30+ worksheets have already been populated), I can't rerun the code without a run-time error '1004'. It states "Cannot rename a sheet to the same name as another sheet, a referenced object library or a workbook referenced by visual basic.

Some how I need the code to identify to only add worksheets that have not already been identified.

(P.S. I am completely naive about this coding stuff, I got the code from another message board and pretty much copy and pasted and individualized the sheet names).

Appreciate any help.