Create Measure that Counts Total Rows when added to Table

My goal is to create a summary table containing a measure that scores each ZIP based on facility % share, where the highest share has a score of 100%.  I'm starting with a source data table similar to this:

I first created a measure for Facility % Share using the DAX below: 

Facility % Share = DIVIDE(SUM('Table'[Facility 1]), SUM('Table'[Market Total]))​

I then created a measure for Facility Share Rank using the DAX below:

Facility Share RANK = RANKX( ALLSELECTED('Table'[ZIP]), [Facility % Share],,ASC,Skip)

I then created a measure for ZIP Count using the DAX below:

ZIP Count = CALCULATE(COUNTROWS('Table'),FILTER('Table',[Facility % Share]))

Lastly, created a measure for Score using the DAX below:

Score = [Facility Share RANK]/[ZIP Count]

My ZIP Count measure works fine when put into a card, but when I try to include in a table the count measure =1 based on the individual ZIP code in each particular row.   Is there a way to modify my ZIP count measure so that it will always =20 even when I bring it into the table below?  In other words I'd like the Score for 10003 to be 100%, 10020 to be 95%, 10006 to be 90%, etc.